us-gaap |
Segment Reporting Information, Expenditures for Additions to Long-Lived Assets (Deprecated 2013-01-31) |
Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets. |
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us-gaap |
Amortization of Intangible Assets |
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. |
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us-gaap |
Disposal Group, Including Discontinued Operation, Assets, Current |
Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. |
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us-gaap |
Capitalization, Long-term Debt and Equity |
This element represents the total consolidated (as applicable) capitalization of the entity which is comprised of its long-term debt and equity instruments. The table may be detailed by subsidiary (legal entity) and include information by type of debt or equity detailed by instrument. |
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us-gaap |
Cash and Cash Equivalents, at Carrying Value |
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. |
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us-gaap |
Cash and Cash Equivalents, Period Increase (Decrease) |
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. |
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us-gaap |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. |
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us-gaap |
Decommissioning Fund Investments |
Decommission fund to pay for the costs of decontaminating and decommissioning of facilities through collection of revenues derived from utility assessments and government appropriations. Decommission fund investment for the process whereby a power station, at the end of its economic life, is taken permanently out of service and its site made available for other purposes. In the case of a nuclear station this comprises three different states of clearance. Immediately after the final closure, radioactive material such as nuclear fuel and operational waste is removed and the buildings surrounding the reactor shield are dismantled and finally the reactor itself is dismantled. |
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us-gaap |
Decommissioning Fund Investments, Fair Value |
The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. |
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us-gaap |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation |
Amount of decrease in accumulated postretirement benefit obligation from one-percentage-point decrease in assumed health care cost trend rate. |
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us-gaap |
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year (Deprecated 2013-01-31) |
The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions. |
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us-gaap |
Derivative Asset, Fair Value, Gross Asset |
Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates. |
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us-gaap |
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options (Deprecated 2017-01-31) |
Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. |
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us-gaap |
Employee Service Share-based Compensation, Unrecognized Compensation Costs on Nonvested Awards (Deprecated 2011-01-31) |
As of the latest balance sheet date presented, the total compensation cost related to outstanding, nonvested equity-based compensation awards not yet recognized (will be charged against earnings as services are performed or other vesting criteria are met). |
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us-gaap |
Employee Service Share-based Compensation, Unrecognized Compensation Costs on Nonvested Awards, Weighted Average Period of Recognition (Deprecated 2011-01-31) |
The weighted average period over which unrecognized equity-based compensation costs are expected to be reported. |
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us-gaap |
Energy Marketing Contract Liabilities, Current |
Current liabilities attributable to energy marketing activities (trading activities). Current energy marketing (trading activities) are when entities engage in both financial and physical trading to increase profits, manage their commodity price risk and enhance system reliability. They may trade electricity, coal, natural gas and oil. These entities typically use a variety of financial instruments, including forward contracts, options and swaps. |
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us-gaap |
Finance Lease, Liability, to be Paid, after Year Five |
Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finite-Lived Intangible Asset, Expected Amortization, Year Five |
Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finite-Lived Intangible Asset, Expected Amortization, Year Four |
Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finite-Lived Intangible Asset, Expected Amortization, Year Three |
Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Foreign Currency Derivative Assets at Fair Value (Deprecated 2014-01-31) |
Fair value as of the balance sheet date of foreign currency derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets on the balance sheet. |
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us-gaap |
Foreign Currency Derivatives at Fair Value, Net (Deprecated 2014-01-31) |
Fair value as of the balance sheet date of foreign currency derivative assets, net of foreign currency derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet. |
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us-gaap |
Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments (Deprecated 2012-01-31) |
Amount of unrealized gain (loss) related to the fair value of interest rate derivatives designated as fair value hedging instruments. Recognized in earnings and offsets the gain (loss) on the hedged item to the extent that the fair value hedge is determined to be effective. |
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us-gaap |
Intangible Assets, Net (Including Goodwill) |
Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. |
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us-gaap |
Investment Tax Credit |
The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits. |
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us-gaap |
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust |
Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. |
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us-gaap |
Lessor, Operating Lease, Payment to be Received, Year One |
Amount of lease payment to be received by lessor for operating lease in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessor, Operating Lease, Payment to be Received, Year Two |
Amount of lease payment to be received by lessor for operating lease in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Leveraged Lease Investment |
Carrying amount as of the balance sheet date of leveraged lease investments which represent the aggregate amount of the estimated residual value of the lease assets and lease payments receivables, net of unearned and deferred income to be allocated over the lease term and non-recourse debt. |
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us-gaap |
Leveraged Leases, Balance Sheet, Investment in Leveraged Leases |
The net investment in arrangements meeting the criteria to be classified as leveraged excluding deferred taxes. |
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us-gaap |
Leveraged Leases, Balance Sheet, Investment in Leveraged Leases, Net |
The net investment in arrangements meeting the criteria to be classified as leveraged. |
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us-gaap |
Long-Term Debt, Maturity, Year Five |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Redeemable |
Amount after tax of income (loss) attributable to other redeemable noncontrolling equity holder. |
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us-gaap |
Nonoperating Income (Expense) |
The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). |
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us-gaap |
Notional Amount of Cash Flow Hedge Instruments (Deprecated 2013-01-31) |
Aggregate notional amount of all derivatives designated as cash flow hedging instruments. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument. |
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us-gaap |
Notional Amount of Fair Value Hedge Instruments (Deprecated 2013-01-31) |
Aggregate notional amount of all derivatives designated as a fair value hedging instrument. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument. |
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us-gaap |
Operating Loss Carryforwards |
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. |
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us-gaap |
Operating Loss Carryforwards, Valuation Allowance |
The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. |
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us-gaap |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent |
Amount after tax of other comprehensive income (loss) attributable to parent entity. |
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us-gaap |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax |
Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax (Deprecated 2013-01-31) |
Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income. |
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us-gaap |
Payments for Investment in Restricted Cash from Pollution Control Bond |
The cash outflow for investments in restricted cash from pollution control bond, which is a debt security issued by a state, certain agencies or authorities, a local government, or development corporation to finance the construction of air- or water-pollution control facilities or sewage or solid waste disposal facilities pursuant to federal law. The bonds are backed by the credit of the beneficiary of the financing rather than the credit of the issuer. |
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us-gaap |
Proceeds from Distribution of Restricted Cash from Pollution Control Bond |
The cash inflow from amounts received from distributions of restricted cash from pollution control bond, which is a debt security issued by a state, certain agencies or authorities, a local government, or development corporation to finance the construction of air- or water-pollution control facilities or sewage or solid waste disposal facilities pursuant to federal law. The bonds are backed by the credit of the beneficiary of the financing rather than the credit of the issuer. |
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us-gaap |
Proceeds from Divestiture of Businesses, Net of Cash Divested |
This element represents the cash inflow during the period from the sale of a component of the entity. |
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us-gaap |
Recognition of Deferred Revenue |
The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by or used in operations using the indirect method. |
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us-gaap |
Redeemable Noncontrolling Interest, Equity, Carrying Amount |
As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. |
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us-gaap |
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Five |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number |
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price |
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. |
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us-gaap |
Short-term Debt, Average Outstanding Amount |
For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period. |
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us-gaap |
State and Local Income Tax Expense (Benefit), Continuing Operations |
Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations. |
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us-gaap |
Stockholders' Equity Attributable to Parent |
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. |
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us-gaap |
Temporary Equity, Carrying Amount (Deprecated 2012-01-31) |
The carrying value (book value) of an entity's issued and outstanding stock which is not included within permanent equity in Stockholders Equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. |
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us-gaap |
Increase (Decrease) in Accrued Taxes Payable |
The increase (decrease) during the reporting period of all taxes owed but not paid, including income, property and other taxes. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. |
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us-gaap |
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share |
The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date. |
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us-gaap |
Sale of Stock, Number of Shares Issued in Transaction |
The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. |
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us-gaap |
4262820 |
None |
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us-gaap |
Finance Lease, Liability, Noncurrent |
Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. |
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us-gaap |
Finance Lease, Liability, Payment, Due |
Amount of lessee's undiscounted obligation for lease payments for finance lease. |
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us-gaap |
Other Noncash Income (Expense) |
Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other. |
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us-gaap |
Other Nonoperating Income (Expense) |
Amount of income (expense) related to nonoperating activities, classified as other. |
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us-gaap |
Other Revenue, Net (Deprecated 2018-01-31) |
Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other. |
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us-gaap |
Regulatory Assets |
The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. |
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us-gaap |
Other Long-term Investments |
Amount of long-term investments classified as other. |
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us-gaap |
Assets, Noncurrent |
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. |
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us-gaap |
Finance Lease, Liability, Current |
Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. |
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dei |
Entity Common Stock, Shares Outstanding |
Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. |
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dei |
Entity Public Float |
The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter. |
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invest |
Derivative, Notional Amount |
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. |
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us-gaap |
Accounts Payable, Current |
Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Accounts Receivable, before Allowance for Credit Loss, Current |
Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. |
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us-gaap |
Accounts Receivable, after Allowance for Credit Loss |
Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. |
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us-gaap |
Accrual for Taxes Other than Income Taxes, Current |
Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Accrued Capping, Closure, Post-closure and Environmental Costs |
The amount of estimated costs accrued as of the balance sheet date to comply with regulatory requirements pertaining to the retirement of a waste management facility (such as a landfill or waste treatment facility). Represents the portion that will be paid within one year or the normal operating cycle, if longer. |
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us-gaap |
Accrued Environmental Loss Contingencies, Noncurrent |
Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer. |
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us-gaap |
Accrued Income Taxes, Current |
Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. |
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us-gaap |
Accrued Salaries, Current |
Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Accrued Vacation, Current |
Carrying value as of the balance sheet date of obligations incurred and payable for unused vacation time owed to employees based on the entity's vacation benefit given to its employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Accumulated Deferred Investment Tax Credit |
The noncurrent portion of the reserve for accumulated deferred investment tax credits as of the balance sheet date. This is the remaining investment credit, which will reduce the cost of services collected from ratepayers by a ratable portion over the investment's regulatory life. |
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us-gaap |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment |
Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. |
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us-gaap |
Accumulated Other Comprehensive Income (Loss), Net of Tax |
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. |
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us-gaap |
Additional Paid in Capital, Common Stock |
Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. |
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us-gaap |
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities, Other (Deprecated 2011-01-31) |
Transactions that do not result in cash inflows or outflows in the period in which they occur, but affect net income and thus are removed when calculating net cash flow from operating activities using the indirect cash flow method. This element is used when there is not a more specific and appropriate element. |
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us-gaap |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition |
Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. |
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us-gaap |
Share-based Payment Arrangement, Expense |
Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. |
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us-gaap |
Accounts Receivable, Allowance for Credit Loss, Current |
Amount of allowance for credit loss on accounts receivable, classified as current. |
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us-gaap |
Alternative Investment, Fair Value Disclosure (Deprecated 2018-01-31) |
Fair value of investment in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes measurement of net asset value as estimate of fair value. |
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us-gaap |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. |
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us-gaap |
Asset Impairment Charges |
Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. |
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us-gaap |
Asset Retirement Obligation |
The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. |
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us-gaap |
Asset Retirement Obligation, Accretion Expense |
Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. |
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us-gaap |
Asset Retirement Obligation, Cash Paid to Settle |
Amount of cash paid during the period to settle an asset retirement obligation. Amounts paid to settle an asset retirement obligation are generally included in the operating section of the Statement of Cash Flows. |
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us-gaap |
Asset Retirement Obligation, Current |
Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. |
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us-gaap |
Asset Retirement Obligation, Liabilities Incurred |
Amount of asset retirement obligations incurred during the period. |
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us-gaap |
Asset Retirement Obligation, Liabilities Settled |
Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. |
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us-gaap |
Asset Retirement Obligation, Revision of Estimate |
Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. |
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us-gaap |
Asset Retirement Obligations, Noncurrent |
Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. |
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us-gaap |
Assets |
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. |
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us-gaap |
Assets, Current |
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. |
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us-gaap |
Assets Held-for-sale, Not Part of Disposal Group, Current |
Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer. |
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us-gaap |
Business Combination, Consideration Transferred |
Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. |
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us-gaap |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual |
This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. |
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us-gaap |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |
This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. |
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us-gaap |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |
Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. |
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us-gaap |
Capital Expenditures Incurred but Not yet Paid |
Future cash outflow to pay for purchases of fixed assets that have occurred. |
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us-gaap |
Capital Lease Obligations |
Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. |
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us-gaap |
Capital Lease Obligations, Current |
Amount of capital lease obligation due within one year or the normal operating cycle, if longer. |
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us-gaap |
Lease Obligation Incurred |
Amount of increase in lease obligation from new lease. |
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us-gaap |
Capital Leases, Balance Sheet, Assets by Major Class, Net |
The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization. |
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us-gaap |
Capital Leases, Future Minimum Payments Due |
Amount of minimum lease payments for capital leases. |
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us-gaap |
Capital Leases, Future Minimum Payments Due, Next Twelve Months |
Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Capital Leases, Future Minimum Payments Due in Five Years |
Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Capital Leases, Future Minimum Payments Due in Four Years |
Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Capital Leases, Future Minimum Payments Due in Three Years |
Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Capital Leases, Future Minimum Payments Due in Two Years |
Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Capital Leases, Future Minimum Payments Due Thereafter |
Amount of minimum lease payments for capital leases due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Capital Leases, Future Minimum Payments, Executory Costs |
Amounts to be paid by lessee to lessor for maintenance, insurance, and tax expenses related to the leased asset. |
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us-gaap |
Capital Leases, Future Minimum Payments, Interest Included in Payments |
Amount necessary to reduce net minimum lease payments to present value for capital leases. |
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us-gaap |
Capital Leases, Future Minimum Payments, Net Minimum Payments |
Amount of minimum lease payments for capital leases net of executory costs, which include amounts paid by the lessee to the lessor for insurance, maintenance and taxes. |
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us-gaap |
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments |
Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes. |
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us-gaap |
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation |
The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. |
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us-gaap |
Common Stock, Value, Issued |
Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. |
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us-gaap |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents |
Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
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us-gaap |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect |
Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
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us-gaap |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect |
Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
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us-gaap |
Cash Flow Hedge Derivative Instrument Assets at Fair Value |
Fair value of all asset derivatives designated as cash flow hedging instruments. |
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us-gaap |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |
Fair value of all liability derivatives designated as cash flow hedging instruments. |
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us-gaap |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months |
The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. |
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us-gaap |
Cash Flow Hedge Loss Reclassified to Interest Expense (Deprecated 2013-01-31) |
The amount of losses on a cash flow hedge reclassified in the period to interest expense from accumulated other comprehensive income. |
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us-gaap |
Cash Paid for Capitalized Interest (Deprecated 2011-01-31) |
The amount of cash paid during the current period for interest owed on money borrowed that is not charged as an expense but rather is capitalized based on the long term nature of the use of the borrowed funds. |
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us-gaap |
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments (Deprecated 2012-01-31) |
Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective. |
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us-gaap |
Collateral Already Posted, Aggregate Fair Value |
The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. |
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us-gaap |
Commercial Paper |
Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. |
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us-gaap |
Common Stock, Dividends, Per Share, Cash Paid |
Aggregate dividends paid during the period for each share of common stock outstanding. |
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us-gaap |
Common Stockholders' Equity (Deprecated 2013-01-31) |
Items including common stock value, paid in capital, retained earnings, common stock purchased for the treasury and excluding noncontrolling interests (minority interests) and preferred stockholder interests. |
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us-gaap |
Common Stock, Par or Stated Value Per Share |
Face amount or stated value per share of common stock. |
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us-gaap |
Common Stock, Shares Authorized |
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. |
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us-gaap |
Common Stock, Shares, Issued |
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. |
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us-gaap |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest |
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners. |
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us-gaap |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest |
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. |
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us-gaap |
Construction in Progress, Gross |
Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. |
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us-gaap |
Contract with Customer, Asset, after Allowance for Credit Loss |
Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. |
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us-gaap |
Contract with Customer, Liability |
Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. |
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us-gaap |
Contract with Customer, Liability, Revenue Recognized |
Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. |
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us-gaap |
Contribution of Property |
Value of property contributed in noncash investing and financing activities. |
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us-gaap |
Conversion of Stock, Shares Converted |
"The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. ""Part noncash"" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period." |
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us-gaap |
Cost of Goods and Services Sold |
The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. |
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us-gaap |
Cost of Purchased Power (Deprecated 2018-01-31) |
Cost of electricity purchased as well as fuel used to generate electricity used in operations and sold during the reporting period. |
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us-gaap |
Costs and Expenses |
Total costs of sales and operating expenses for the period. |
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us-gaap |
Cumulative Effect of Initial Adoption of New Accounting Principle (Deprecated 2011-01-31) |
Cumulative effect of initial adoption of new accounting principle on beginning retained earnings, net of tax. This element can be used, generally, for the adjustment to retained earnings of a new accounting principle. |
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us-gaap |
Cumulative Effect of New Accounting Principle in Period of Adoption (Deprecated 2020-01-31) |
Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. |
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us-gaap |
Current Federal Tax Expense (Benefit) |
Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Current State and Local Tax Expense (Benefit) |
Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Customer Deposits, Current |
The current portion of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understandings. |
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us-gaap |
Long-term Debt, Gross |
Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. |
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us-gaap |
Debt Instrument, Face Amount |
Face (par) amount of debt instrument at time of issuance. |
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us-gaap |
Debt Instrument, Fair Value Disclosure |
Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. |
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us-gaap |
Debt Instrument, Unamortized Discount |
Amount, after accumulated amortization, of debt discount. |
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us-gaap |
Debt Instrument, Unamortized Discount (Premium), Net |
Amount, after accumulated amortization, of debt discount (premium). |
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us-gaap |
Debt Instrument, Unamortized Premium |
Amount, after accumulated amortization, of debt premium. |
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us-gaap |
Share-based Payment Arrangement, Exercise of Option, Tax Benefit |
Amount of tax benefit from exercise of option under share-based payment arrangement. |
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us-gaap |
Deferred Credits and Other Liabilities |
Total carrying amount as of the balance sheet date of unearned revenue or income, not otherwise specified in the taxonomy, which is expected to be taken into income in future periods and obligations not separately disclosed in the balance sheet (other liabilities). |
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us-gaap |
Deferred Federal Income Tax Expense (Benefit) |
Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Deferred Gas Cost |
Carrying amount as of the balance sheet date of capitalized gas costs of a regulated entity that are expected to be recoverable through rate adjustments within one year or the normal operating cycle, if longer. |
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us-gaap |
Deferred Income Tax Expense (Benefit) |
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Deferred Income Taxes and Tax Credits |
Amount of deferred income tax expense (benefit) and income tax credits. |
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us-gaap |
Deferred Tax Liabilities, Gross |
Amount of deferred tax liability attributable to taxable temporary differences. |
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us-gaap |
Deferred Income Tax Liabilities, Net |
Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. |
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us-gaap |
Deferred State and Local Income Tax Expense (Benefit) |
Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Deferred Tax Assets, Gross |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. |
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us-gaap |
Deferred Tax Assets, Net |
Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. |
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us-gaap |
Deferred Tax Assets, Net, Current |
Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, netted by jurisdiction and classified as current. |
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us-gaap |
Deferred Tax Assets, Net, Noncurrent |
Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting and classified as noncurrent. |
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us-gaap |
Deferred Tax Assets, Net of Valuation Allowance |
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. |
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us-gaap |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. |
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us-gaap |
Deferred Tax Assets, Regulatory Assets and Liabilities |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences derived regulatory assets and liabilities. |
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us-gaap |
Deferred Tax Assets, State Taxes |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes. |
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us-gaap |
Deferred Tax Assets, Tax Credit Carryforwards |
Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. |
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us-gaap |
Deferred Tax Assets, Valuation Allowance |
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. |
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us-gaap |
Deferred Tax Liabilities, Net |
Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. |
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us-gaap |
Deferred Tax Liabilities, Net, Noncurrent |
Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent. |
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us-gaap |
Deferred Tax Liabilities, Regulatory Assets and Liabilities |
Amount of deferred tax liability attributable to taxable temporary differences from regulatory assets and liabilities. |
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us-gaap |
Defined Benefit Plan, Accumulated Benefit Obligation |
Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. |
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us-gaap |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate |
Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase |
Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation (Deprecated 2012-01-31) |
The effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. |
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us-gaap |
Finance Lease, Interest Payment on Liability |
Amount of interest paid on finance lease liability. |
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us-gaap |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components (Deprecated 2012-01-31) |
The effect of a one-percentage- point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. |
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us-gaap |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components |
Amount of decrease in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point decrease in assumed health care cost trend rate. |
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us-gaap |
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation |
Amount of increase in accumulated postretirement benefit obligation from one-percentage-point increase in assumed health care cost trend rate. |
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us-gaap |
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components |
Amount of increase in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point increase in assumed health care cost trend rate. |
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us-gaap |
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year (Deprecated 2017-01-31) |
The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. |
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us-gaap |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |
Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. |
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us-gaap |
Defined Benefit Plan, Target Plan Asset Allocations (Deprecated 2017-01-31) |
Target allocation of investments of this type to total plan assets presented on a weighted average basis. |
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us-gaap |
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate (Deprecated 2017-01-31) |
The ultimate trend rate for health care costs. |
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us-gaap |
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage |
Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. |
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us-gaap |
Defined Contribution Plan, Cost |
Amount of cost for defined contribution plan. |
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us-gaap |
Defined Contribution Plan, Employer Discretionary Contribution Amount |
Amount of discretionary contributions made by an employer to a defined contribution plan. |
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us-gaap |
Depreciation, Amortization and Accretion, Net |
The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method. |
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us-gaap |
Derivative Asset Designated as Hedging Instrument, Fair Value (Deprecated 2011-01-31) |
Fair value of a derivative asset (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. |
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us-gaap |
Derivative Asset, Fair Value, Gross Liability |
Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. |
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us-gaap |
Derivative Asset Not Designated as Hedging Instrument, Fair Value (Deprecated 2011-01-31) |
Fair value of a derivative asset that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. |
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us-gaap |
Derivative Asset |
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Derivative Asset, Current |
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Derivative, Basis Spread on Variable Rate |
The percentage points added to the reference rate to compute the variable rate on the interest rate derivative. |
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us-gaap |
Derivative, Collateral, Obligation to Return Cash |
Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets. |
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us-gaap |
Finance Lease, Liability |
Present value of lessee's discounted obligation for lease payments from finance lease. |
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us-gaap |
Derivative Liability, Fair Value, Gross Liability |
Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. |
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us-gaap |
Derivative Liability, Fair Value, Amount Not Offset Against Collateral |
Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. |
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us-gaap |
Derivative, Gain (Loss) on Derivative, Net |
Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. |
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us-gaap |
Derivative Instruments and Hedges, Liabilities |
Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements. |
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us-gaap |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |
The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. |
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us-gaap |
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net (Deprecated 2018-01-31) |
The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. |
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us-gaap |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net |
Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. |
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us-gaap |
Derivative Liability |
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Derivative Liability Designated as Hedging Instrument, Fair Value (Deprecated 2011-01-31) |
Fair value of a derivative liability (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. |
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us-gaap |
Derivative Liability, Fair Value, Gross Asset |
Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. |
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us-gaap |
Derivative Liability Not Designated as Hedging Instrument, Fair Value (Deprecated 2011-01-31) |
Fair value of a derivative liability that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. |
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us-gaap |
Disposal Group, Including Discontinued Operation, Assets, Noncurrent |
Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. |
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us-gaap |
Disposal Group, Including Discontinued Operation, Cash |
Amount of currency on hand, demand deposits with banks or financial institutions, and other kinds of accounts that have the general characteristics of demand deposits, held by a disposal group. |
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us-gaap |
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents |
Amount classified as cash and cash equivalents attributable to disposal group held for sale or disposed of. |
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us-gaap |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal |
Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. |
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us-gaap |
Dividends, Common Stock, Cash |
Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. |
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us-gaap |
Earnings Per Share, Basic |
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. |
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us-gaap |
Earnings Per Share, Diluted |
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Percent |
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. |
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us-gaap |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). |
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us-gaap |
Effective Income Tax Rate Reconciliation, Deduction, Employee Stock Ownership Plan Dividend, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for dividend paid to employee stock ownership plan. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Disposition of Business, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to disposition of a business not qualifying as a discontinued operation. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to noncontrolling interest income (loss) exempt from income taxes. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depreciation, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to depreciation. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Leases, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to lease expense. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense. |
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us-gaap |
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). |
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us-gaap |
Effective Income Tax Rate Reconciliation, Tax Credit, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to investment tax credit. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent |
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements. |
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us-gaap |
Electric Revenue (Deprecated 2018-01-31) |
The aggregate revenue, whether regulated or unregulated, derived from the generation, transmission and distribution of electricity. |
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us-gaap |
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options (Deprecated 2017-01-31) |
Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. |
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us-gaap |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |
Amount of cost not yet recognized for nonvested award under share-based payment arrangement. |
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us-gaap |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition (Deprecated 2012-01-31) |
The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years. |
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us-gaap |
Share-based Payment Arrangement, Expense, Tax Benefit |
Amount of tax benefit for recognition of expense of award under share-based payment arrangement. |
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us-gaap |
Energy Marketing Contracts Assets, Current |
Carrying amount as of the balance sheet date of the asset arising from energy trading activities that involves the purchase and sale of energy under forward contracts at fixed and variable prices and the buying and selling of financial energy contracts that include exchange futures and options and over the counter options and swaps, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer. |
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us-gaap |
Energy Related Inventory, Natural Gas in Storage |
Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale. |
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us-gaap |
Energy Related Inventory, Other Fossil Fuel |
Amount of fossil fuel included in inventory classified as other. |
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us-gaap |
Environmental Remediation Expense |
The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. |
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us-gaap |
Equity Method Investments |
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. |
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us-gaap |
Fair Value, Assets Measured on Recurring Basis, Cash and Cash Equivalents (Deprecated 2011-01-31) |
This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis. |
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us-gaap |
Fair Value, Assets Measured on Recurring Basis, Derivative Financial Instruments, Assets (Deprecated 2011-01-31) |
This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis. |
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us-gaap |
Fair Value, Liabilities Measured on Recurring Basis, Derivative Financial Instruments, Liabilities (Deprecated 2011-01-31) |
This element represents a certain statement of financial position liability caption which represents a class of liabilities, or which may include an individual liability, measured at fair value on a recurring basis. |
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us-gaap |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings (Deprecated 2012-01-31) |
This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value. |
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us-gaap |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) (Deprecated 2012-01-31) |
This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity). |
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us-gaap |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases |
Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. |
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us-gaap |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements) |
Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. |
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us-gaap |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net |
Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. |
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us-gaap |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |
Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. |
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us-gaap |
Federal Income Tax Expense (Benefit), Continuing Operations |
Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations. |
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us-gaap |
Finance Lease, Interest Expense |
Amount of interest expense on finance lease liability. |
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us-gaap |
Finance Lease, Liability, Payments, Due in Next Rolling Twelve Months |
Amount of lessee's undiscounted obligation for lease payments for finance lease, due after fifth fiscal year following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. |
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us-gaap |
Finance Lease, Liability, to be Paid, Year One |
Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finance Lease, Liability, to be Paid, Year Five |
Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finance Lease, Liability, to be Paid, Year Four |
Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finance Lease, Liability, to be Paid, Year Three |
Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finance Lease, Liability, to be Paid, Year Two |
Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year |
Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year. |
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us-gaap |
Finance Lease, Liability, Undiscounted Excess Amount |
Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease. |
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us-gaap |
Finance Lease, Principal Payments |
Amount of cash outflow for principal payment on finance lease. |
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us-gaap |
Finance Lease, Right-of-Use Asset, after Accumulated Amortization |
Amount, after accumulated amortization, of right-of-use asset from finance lease. |
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us-gaap |
Finance Lease, Right-of-Use Asset, Amortization |
Amount of amortization expense attributable to right-of-use asset from finance lease. |
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us-gaap |
Finance Lease, Weighted Average Discount Rate, Percent |
Weighted average discount rate for finance lease calculated at point in time. |
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us-gaap |
Finite-Lived Intangible Assets, Accumulated Amortization |
Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. |
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us-gaap |
Finite-Lived Intangible Asset, Expected Amortization, Year One |
Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finite-Lived Intangible Asset, Expected Amortization, Year Two |
Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Finite-Lived Intangible Assets, Gross |
Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. |
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us-gaap |
Finite-Lived Intangible Assets, Net |
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. |
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us-gaap |
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months |
The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. |
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us-gaap |
Gain (Loss) on Contract Termination |
Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform. |
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us-gaap |
Gain (Loss) on Disposition of Assets |
Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. |
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us-gaap |
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives |
Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective. |
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us-gaap |
Gain (Loss) Related to Litigation Settlement |
Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. |
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us-gaap |
Gain (Loss) on Extinguishment of Debt, before Write off of Debt Issuance Cost |
Reflects the difference between the fair value of payments made to legally extinguish a debt and its carrying value at that time. This item excludes the write-off of amounts previously capitalized as debt issuance costs. |
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us-gaap |
Goodwill |
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. |
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us-gaap |
Goodwill, Impairment Loss |
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. |
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us-gaap |
Goodwill, Transfers |
Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. |
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us-gaap |
Goodwill, Written off Related to Sale of Business Unit |
Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. |
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us-gaap |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |
Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. |
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us-gaap |
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest |
Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. |
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us-gaap |
Income (Loss) from Equity Method Investments |
Amount of income (loss) for proportionate share of equity method investee's income (loss). |
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us-gaap |
Income Tax Effects Allocated Directly to Equity, Cumulative Effect of Change in Accounting Principle |
Amount of cumulative tax effect on beginning retained earnings from change in accounting principle. |
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us-gaap |
Income Tax Expense (Benefit) |
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. |
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us-gaap |
Income Taxes Paid, Net |
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. |
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us-gaap |
Income Taxes Receivable, Current |
Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. |
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us-gaap |
Income Taxes Receivable, Noncurrent |
Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible restructuring charges. |
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us-gaap |
Increase (Decrease) in Accounts Payable |
The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. |
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us-gaap |
Increase (Decrease) in Accrued Salaries |
The increase (decrease) during the period in accrued salaries. |
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us-gaap |
Increase (Decrease) in Deposits |
The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances. |
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us-gaap |
Increase (Decrease) in Fossil Fuel Inventories |
The increase (decrease) during the reporting period in the value of fossil fuel held in inventory. |
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us-gaap |
Increase (Decrease) in Income Taxes Receivable |
The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid. |
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us-gaap |
Increase (Decrease) in Interest Payable, Net |
The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity. |
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us-gaap |
Increase (Decrease) in Materials and Supplies |
The increase (decrease) during the period in the carrying amount of capitalized costs of materials, supplies, or both, which are not included in inventory. |
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us-gaap |
Increase (Decrease) in Other Operating Assets |
Amount of increase (decrease) in operating assets classified as other. |
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us-gaap |
Increase (Decrease) in Other Operating Liabilities |
Amount of increase (decrease) in operating liabilities classified as other. |
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us-gaap |
Increase (Decrease) in Prepaid Expense |
The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods. |
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us-gaap |
Increase (Decrease) in Raw Materials, Packaging Materials and Supplies Inventories |
The increase (decrease) during the reporting period in the value of raw materials, packaging materials and supplies held in inventory. |
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us-gaap |
Increase (Decrease) in Receivables |
The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities. |
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us-gaap |
Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements |
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of equity unit purchase agreements using the treasury stock method. |
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us-gaap |
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements |
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. |
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us-gaap |
Indefinite-lived Intangible Assets (Excluding Goodwill) |
Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. |
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us-gaap |
Intangible Assets, Gross (Excluding Goodwill) |
Amount before accumulated amortization of intangible assets, excluding goodwill. |
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us-gaap |
Intangible Assets, Net (Excluding Goodwill) |
Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. |
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us-gaap |
Interest and Debt Expense |
Interest and debt related expenses associated with nonoperating financing activities of the entity. |
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us-gaap |
Interest Income (Expense), Nonoperating, Net |
The net amount of nonoperating interest income (expense). |
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us-gaap |
Interest Paid, Capitalized, Investing Activities |
Amount of cash paid for interest capitalized, classified as investing activity. |
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us-gaap |
Interest Paid, Excluding Capitalized Interest, Operating Activities |
Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. |
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us-gaap |
Interest Payable, Current |
Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net |
The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. |
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us-gaap |
Interest Rate Derivative Assets, at Fair Value |
Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets. |
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us-gaap |
Interest Rate Derivative Liabilities, at Fair Value |
Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. |
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us-gaap |
Investment Income, Interest and Dividend |
Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities. |
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us-gaap |
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust, Current |
The current portion of the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. |
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us-gaap |
Operating Leases, Rent Expense |
Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. |
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us-gaap |
Lease, Cost |
Amount of lease cost recognized by lessee for lease contract. |
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us-gaap |
Lease Income |
Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor. |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid |
Amount of lessee's undiscounted obligation for lease payment for operating lease. |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid, after Year Five |
Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessee, Operating Lease, Liability, Payments, Due Next Rolling Twelve Months |
Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date. |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid, Year One |
Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid, Year Five |
Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid, Year Four |
Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid, Year Three |
Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid, Year Two |
Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year |
Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year. |
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us-gaap |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount |
Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease. |
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|
us-gaap |
Lessor, Operating Lease, Payments to be Received |
Amount of lease payments to be received by lessor for operating lease. |
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us-gaap |
Lessor, Operating Lease, Payment to be Received, Year Five |
Amount of lease payment to be received by lessor for operating lease in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessor, Operating Lease, Payment to be Received, Year Four |
Amount of lease payment to be received by lessor for operating lease in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessor, Operating Lease, Payments to be Received, Next Rolling Twelve Months |
Amount of lease payments to be received by lessor in next rolling twelve months following latest statement of financial position date for operating lease. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. |
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us-gaap |
Noncontrolling Interest, Increase from Sale of Parent Equity Interest |
Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest. |
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us-gaap |
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year |
Amount of lease payment to be received by lessor for operating lease in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessor, Operating Lease, Payment to be Received, after Year Five |
Amount of lease payment to be received by lessor for operating lease after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Lessor, Operating Lease, Payment to be Received, Year Three |
Amount of lease payment to be received by lessor for operating lease in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Leveraged Leases, Income (Loss) |
The total recognized during the period for income on leases meeting the criteria for classification as leveraged leases. |
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us-gaap |
Liabilities |
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. |
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us-gaap |
Liabilities and Equity |
Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. |
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us-gaap |
Liabilities, Current |
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. |
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us-gaap |
Liabilities, Noncurrent |
Amount of obligation due after one year or beyond the normal operating cycle, if longer. |
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us-gaap |
Disposal Group, Including Discontinued Operation, Liabilities, Current |
Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. |
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us-gaap |
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent |
Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of beyond one year or the normal operating cycle, if longer. |
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us-gaap |
Line of Credit Facility, Commitment Fee Percentage |
The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. |
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us-gaap |
Line of Credit Facility, Maximum Borrowing Capacity |
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. |
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us-gaap |
Line of Credit Facility, Remaining Borrowing Capacity |
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). |
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us-gaap |
Loans Payable to Bank |
Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer. |
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us-gaap |
Loans Payable to Bank, Current |
Carrying value as of the balance sheet date of current portion of long-term loans payable to bank due within one year or the operating cycle if longer. |
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us-gaap |
Long-term Debt and Lease Obligation |
Amount of long-term debt and lease obligation, classified as noncurrent. |
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us-gaap |
Long-term Debt and Lease Obligation, Current |
Amount of long-term debt and lease obligation, classified as current. |
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us-gaap |
Long-Term Debt, Maturity, after Year Five |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year One |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Other Long-term Debt |
Amount of long-term debt classified as other. |
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us-gaap |
Long-Term Debt, Maturity, Year Four |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year Three |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year Two |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-term Investments |
The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). |
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us-gaap |
Long-term Pollution Control Bond, Current |
Current portion of a debt security issued by a state, certain agencies or authorities, a local government, or development corporation to finance the construction of air- or water-pollution control facilities or sewage or solid waste disposal facilities pursuant to federal law. The bonds are backed by the credit of the beneficiary of the financing rather than the credit of the issuer. |
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us-gaap |
Long-term Pollution Control Bond |
Represents the current and noncurrent portions of a debt security issued by a state, certain agencies or authorities, a local government, or development corporation to finance the construction of air- or water-pollution control facilities or sewage or solid waste disposal facilities pursuant to federal law. The bonds are backed by the credit of the beneficiary of the financing rather than the credit of the issuer. |
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us-gaap |
Loss Contingency, Number of Plaintiffs |
Number of plaintiffs that have filed claims pertaining to a loss contingency. |
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us-gaap |
Maturities of Senior Debt |
The cash outflow for the settlement of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, as it matures. |
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us-gaap |
Stockholders' Equity Attributable to Noncontrolling Interest |
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). |
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us-gaap |
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders |
Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. |
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us-gaap |
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |
Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). |
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us-gaap |
Noncontrolling Interest in Preferred Unit Holders |
Carrying amount of the equity interests owned by noncontrolling preferred unit holders in an entity included in the reporting entity's consolidated financial statements. |
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us-gaap |
Noncontrolling Interest, Ownership Percentage by Parent |
The parent entity's interest in net assets of the subsidiary, expressed as a percentage. |
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us-gaap |
Net Cash Provided by (Used in) Financing Activities |
Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. |
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us-gaap |
Net Cash Provided by (Used in) Investing Activities |
Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. |
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us-gaap |
Net Cash Provided by (Used in) Operating Activities |
Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. |
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us-gaap |
Net Income (Loss) Attributable to Parent |
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. |
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us-gaap |
Net Income (Loss) Attributable to Noncontrolling Interest |
Amount of Net Income (Loss) attributable to noncontrolling interest. |
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us-gaap |
Net Income (Loss) Available to Common Stockholders, Basic |
Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. |
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us-gaap |
Net Regulatory Assets |
The net amount of all regulatory assets less all regulatory liabilities as of the end of the period. |
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us-gaap |
Nonredeemable Noncontrolling Interest |
Portion of equity (net assets) in a subsidiary not attributable, directly or indirectly, to the parent entity which is not redeemable by the parent entity. |
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us-gaap |
Notional Amount of Interest Rate Derivatives (Deprecated 2013-01-31) |
Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments. |
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us-gaap |
Number of Reportable Segments |
Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. |
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us-gaap |
Number of States in which Entity Operates |
The number of states the entity operates in as of the balance sheet date. |
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us-gaap |
Operating Income (Loss) |
The net result for the period of deducting operating expenses from operating revenues. |
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us-gaap |
Operating Lease, Cost |
Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. |
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us-gaap |
Operating Lease, Lease Income |
Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable. |
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us-gaap |
Operating Lease, Liability |
Present value of lessee's discounted obligation for lease payments from operating lease. |
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us-gaap |
Operating Lease, Liability, Current |
Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. |
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us-gaap |
Operating Lease, Liability, Noncurrent |
Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. |
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us-gaap |
Operating Lease, Payments |
Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. |
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us-gaap |
Operating Lease, Right-of-Use Asset |
Amount of lessee's right to use underlying asset under operating lease. |
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us-gaap |
Operating Leases, Future Minimum Payments Due |
Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. |
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us-gaap |
Operating Leases, Future Minimum Payments Due, Next Twelve Months |
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Operating Leases, Future Minimum Payments, Due in Five Years |
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Operating Leases, Future Minimum Payments, Due in Four Years |
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Operating Leases, Future Minimum Payments, Due in Three Years |
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Operating Leases, Future Minimum Payments, Due in Two Years |
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Operating Leases, Future Minimum Payments, Due Thereafter |
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
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us-gaap |
Operating Lease, Weighted Average Discount Rate, Percent |
Weighted average discount rate for operating lease calculated at point in time. |
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us-gaap |
Other Assets, Current |
Amount of current assets classified as other. |
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us-gaap |
Other Assets, Fair Value Disclosure |
Fair value portion of other assets. |
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us-gaap |
Other Assets, Noncurrent |
Amount of noncurrent assets classified as other. |
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us-gaap |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period ,Tax (Deprecated 2011-01-31) |
Tax effect on the cost of benefit improvement resulting from a plan amendment that occurred during the period. The cost has not been recognized in net periodic benefit cost pursuant. A plan amendment includes provisions that grant increased benefits based on service rendered in prior periods. |
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us-gaap |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax |
Amount, after tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). |
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us-gaap |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax |
Amount, after tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. |
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us-gaap |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax |
Amount of tax expense (benefit) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. |
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us-gaap |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax |
Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. |
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us-gaap |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax |
Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. |
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us-gaap |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax |
Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. |
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us-gaap |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax |
Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. |
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us-gaap |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax |
Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. |
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us-gaap |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax |
Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. |
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us-gaap |
Other Comprehensive Income (Loss), Net of Tax |
Amount after tax and reclassification adjustments of other comprehensive income (loss). |
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us-gaap |
Other Comprehensive Income (Loss), Net of Tax (Deprecated 2012-01-31) |
This element represents Other Comprehensive Income or Loss, Net of Tax, for the period. Includes deferred gains or losses on qualifying hedges, unrealized holding gains or losses on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax |
Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss). |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax |
Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss). |
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us-gaap |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax |
Amount, after tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. |
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us-gaap |
Other Long-term Debt, Current |
Amount of long-term debt classified as other, payable within one year or the operating cycle, if longer. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax (Deprecated 2013-01-31) |
Tax effect of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax (Deprecated 2013-01-31) |
Tax effect of the income statement impact of the reclassification adjustment for actuarial gain (loss) recognized as a component of net periodic benefit cost. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax (Deprecated 2012-01-31) |
Reclassification adjustment for unrealized gains or losses realized upon the sale of securities, after tax. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax (Deprecated 2012-01-31) |
Tax effect on the reclassification adjustment for gains or losses realized upon the sale of securities during the period. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax (Deprecated 2012-01-31) |
Net of tax effect of the reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax (Deprecated 2012-01-31) |
Tax effect on reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax (Deprecated 2013-01-31) |
Net of tax amount of the income statement impact of the reclassification adjustment for actuarial (gains) losses recognized as a component of net periodic benefit cost. |
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us-gaap |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax (Deprecated 2012-01-31) |
For each annual statement of income presented, the tax effect of the net gain (loss) recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period. |
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us-gaap |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax |
Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). |
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us-gaap |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax |
Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). |
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us-gaap |
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax |
Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. |
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us-gaap |
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax |
Amount, before adjustment, of tax expense (benefit) for unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. |
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us-gaap |
Other Cost of Operating Revenue |
Other costs incurred during the reporting period related to other revenue generating activities. |
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us-gaap |
Other Income |
Amount of revenue and income classified as other. |
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us-gaap |
Other Inventory, Supplies, Gross |
Amount before valuation and LIFO reserves of other supplies used within the manufacturing or production process expected to be consumed within one year or operating cycle, if longer. |
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|
us-gaap |
Other Liabilities, Current |
Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer. |
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|
us-gaap |
Other Liabilities, Fair Value Disclosure |
Fair value portion of other liabilities. |
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|
us-gaap |
Other Liabilities, Noncurrent |
Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. |
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us-gaap |
Payments for (Proceeds from) Other Investing Activities |
Amount of cash (inflow) outflow from investing activities classified as other. |
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us-gaap |
Payments for (Proceeds from) Removal Costs |
The net cash inflow or outflow from the costs of disposing of plant, whether by demolishing, dismantling, abandoning, sale, and so forth during the period. |
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us-gaap |
Payments for Removal Costs |
Cash outflow related to disposal costs of plants, whether by demolishing, dismantling, abandoning, sale, and so forth during the period. |
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us-gaap |
Payments for Repurchase of Common Stock |
The cash outflow to reacquire common stock during the period. |
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us-gaap |
Payments for Repurchase of Preferred Stock and Preference Stock |
The cash outflow to reacquire preferred stock during the period. |
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us-gaap |
Payments for Repurchase of Redeemable Preferred Stock |
The cash outflow for reacquisition of callable preferred stock. |
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us-gaap |
Payments of Ordinary Dividends, Common Stock |
Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. |
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us-gaap |
Payments of Ordinary Dividends, Noncontrolling Interest |
Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests. |
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us-gaap |
Payments of Ordinary Dividends, Preferred Stock and Preference Stock |
Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity. |
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us-gaap |
Payments of Stock Issuance Costs |
The cash outflow for cost incurred directly with the issuance of an equity security. |
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us-gaap |
Payments to Acquire Businesses, Net of Cash Acquired |
The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. |
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us-gaap |
Payments to Acquire Equity Method Investments |
The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. |
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us-gaap |
Payments to Acquire Other Property, Plant, and Equipment |
Amount of cash outflow from the acquisition of or improvements to long-lived, physical assets used to produce goods and services and not intended for resale, classified as other. |
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us-gaap |
Payments to Acquire Productive Assets |
The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. |
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us-gaap |
Payments to Acquire Property, Plant, and Equipment |
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. |
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us-gaap |
Payments to Acquire Investments to be Held in Decommissioning Trust Fund |
The cash outflow for the purchase of investments that will be held in a decommissioning trust fund. |
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us-gaap |
Payments to Noncontrolling Interests |
Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. |
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us-gaap |
Payment for Pension and Other Postretirement Benefits |
Amount of cash outflow for pension and other postretirement benefits. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. |
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us-gaap |
Pension and Other Postretirement Benefits Cost (Reversal of Cost) |
Amount of cost (reversal of cost) for pension and other postretirement benefits. |
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us-gaap |
Liability, Defined Benefit Plan, Noncurrent |
Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent. |
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us-gaap |
Preferred Stock Dividends, Income Statement Impact |
The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders. |
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us-gaap |
Preferred Stock, Value, Issued |
Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity. |
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us-gaap |
Prepaid Expense, Current |
Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. |
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us-gaap |
Prepaid Pension Costs (Deprecated 2017-01-31) |
Cumulative employer's contributions in excess of net pension cost recognized, before the adoption of the recognition provisions of FAS 158. Under FAS 158, prepaid pension costs are no longer recognized in the statement of financial position. Note that there is a separate concept for noncurrent assets relating to defined benefit pension and other defined benefit postretirement plans for use under the recognition provisions of FAS 158. |
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us-gaap |
Proceeds from Debt, Net of Issuance Costs |
The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. |
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us-gaap |
Proceeds from Decommissioning Trust Fund Assets |
The cash inflow from the sale of assets held in a decommissioning trust fund. |
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us-gaap |
Proceeds from Issuance of Common Stock |
The cash inflow from the additional capital contribution to the entity. |
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us-gaap |
Proceeds from Issuance of Long-term Debt |
The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. |
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us-gaap |
Proceeds from Issuance of Long-term Debt and Capital Securities, Net |
The cash inflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes proceeds from (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). |
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us-gaap |
Proceeds from Issuance of Preferred Stock and Preference Stock |
Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation. |
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us-gaap |
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised |
Amount of cash inflow from issuance of shares under share-based payment arrangement. Includes, but is not limited to, option exercised. |
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us-gaap |
Proceeds from Noncontrolling Interests |
Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership. |
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us-gaap |
Proceeds from Notes Payable |
The cash inflow from a borrowing supported by a written promise to pay an obligation. |
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us-gaap |
Proceeds from Other Short-term Debt |
Amount of cash inflow from short-term debt classified as other. |
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us-gaap |
Proceeds from (Payments for) Other Financing Activities |
Amount of cash inflow (outflow) from financing activities classified as other. |
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us-gaap |
Proceeds from (Repayments of) Short-term Debt |
The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. |
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us-gaap |
Proceeds from Sale of Productive Assets |
The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. |
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us-gaap |
Proceeds from Short-term Debt |
The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. |
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us-gaap |
Proceeds from Stock Options Exercised |
Amount of cash inflow from exercise of option under share-based payment arrangement. |
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us-gaap |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest |
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. |
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us-gaap |
Property, Plant and Equipment, Gross |
Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. |
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us-gaap |
Property, Plant and Equipment, Net |
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. |
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us-gaap |
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity |
The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets. |
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us-gaap |
Allowance for Funds Used During Construction, Capitalized Interest |
Amount capitalized of allowance for funds used during construction. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments (Deprecated 2012-01-31) |
The amount of acquisition adjustments included in property, plant and equipment (PPE) for utilities. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments |
Amount of acquisition adjustments included in property, plant and equipment (PPE) for utilities. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Distribution |
Period end amount of property, plant and equipment (PPE) related to utility distribution. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Generation or Processing |
Period end amount of property, plant and equipment (PPE) related to generation or processing owned by public utility. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment |
Period end book value of other property, plant and equipment (PPE) owned (but not classified elsewhere) by the public utility. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Plant in Service |
Period end amount of total gross PPE. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Transmission |
Period end amount of property, plant and equipment (PPE) related to utility transmission owned by public utility. |
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us-gaap |
Regulatory Liabilities |
The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period. |
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us-gaap |
Repayments of Long-term Debt |
The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. |
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us-gaap |
Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security |
Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation. |
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us-gaap |
Repayments of Notes Payable |
The cash outflow for a borrowing supported by a written promise to pay an obligation. |
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us-gaap |
Repayments of Other Long-term Debt |
Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer. |
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us-gaap |
Repayments of Other Short-term Debt |
Amount of cash outflow for the payment of debt classified as other, maturing within one year or the operating cycle, if longer. |
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us-gaap |
Repayments of Short-term Debt |
The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. |
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us-gaap |
Restricted Cash |
Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. |
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us-gaap |
Restricted Cash and Cash Equivalents, Current |
Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
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us-gaap |
Restricted Cash and Investments, Current |
The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal. |
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us-gaap |
Retained Earnings (Accumulated Deficit) |
The cumulative amount of the reporting entity's undistributed earnings or deficit. |
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us-gaap |
Revenue from Contract with Customer, Including Assessed Tax |
Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. |
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us-gaap |
Revenue, Remaining Performance Obligation, Amount |
Amount of transaction price allocated to performance obligation that has not been recognized as revenue. |
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us-gaap |
Revenues |
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). |
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us-gaap |
Revenue from External Customers (Deprecated 2013-01-31) |
Amount of revenue from external customers for the reportable segment. Such disclosure is presented if the amount is: (a) included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. |
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us-gaap |
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability |
Amount of increase in right-of-use asset obtained in exchange for finance lease liability. |
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us-gaap |
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability |
Amount of increase in right-of-use asset obtained in exchange for operating lease liability. |
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us-gaap |
Sales-type and Direct Financing Leases, Lease Receivable |
Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type and direct financing leases. |
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us-gaap |
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases. |
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us-gaap |
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Next Rolling Twelve Months |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in next rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date. |
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us-gaap |
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Remainder of Fiscal Year |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Five |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Three |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Two |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount |
Amount of undiscounted lease receivable in excess of discounted receivable for sales-type and direct financing leases. |
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us-gaap |
Sales-type Lease, Interest Income |
Amount of interest income from net investment in sales-type lease. |
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us-gaap |
Segment Reporting Information, Expenditures for Additions to Long-Lived Assets (Deprecated 2011-01-31) |
Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment. |
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us-gaap |
Senior Notes |
Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. |
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us-gaap |
Senior Notes, Current |
Carrying value as of the balance sheet date of the portion of long-term notes having the highest claim on the assets of the issuer in case of bankruptcy or liquidation, due within one year or the normal operating cycle, if longer. Senior note holders are paid off in full before any payments are made to debt holders having a lesser priority of repayment. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate |
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Deprecated 2012-01-31) |
The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate |
The risk-free interest rate assumption that is used in valuing an option on its own shares. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |
The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. |
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us-gaap |
Leveraged Leases, Income Statement, Investment Tax Credit Recognized on Leveraged Leases |
Amount of investment tax credit recognized as income. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term (Deprecated 2012-01-31) |
The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (Deprecated 2011-01-31) |
The decrease in the number of reserved shares that could potentially be issued attributable to the exercise or conversion during the reporting period of previously issued stock options under the option plan. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value |
Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (Deprecated 2012-01-31) |
The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period |
Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period |
For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price |
Weighted average price of options that were either forfeited or expired. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures |
Net number of share options (or share units) granted during the period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (Deprecated 2012-01-31) |
The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |
Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |
Number of options outstanding, including both vested and non-vested options. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price |
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. |
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us-gaap |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price |
Weighted average price at which option holders acquired shares when converting their stock options into shares. |
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us-gaap |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price |
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value |
Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Deprecated 2012-01-31) |
The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years. |
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us-gaap |
Short-term Bank Loans and Notes Payable |
Amount of borrowings from a bank classified as other, maturing within one year or operating cycle, if longer. |
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us-gaap |
Short-term Debt |
Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. |
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us-gaap |
Short-term Debt, Weighted Average Interest Rate, at Point in Time |
Weighted average interest rate of short-term debt outstanding calculated at point in time. |
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us-gaap |
Short-term Lease, Cost |
Amount of short-term lease cost, excluding expense for lease with term of one month or less. |
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us-gaap |
Short-term Debt, Maximum Amount Outstanding During Period |
For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period. |
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us-gaap |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |
Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. |
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us-gaap |
Stockholders' Equity, Other |
This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy. |
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us-gaap |
Stockholders' Equity, Other Shares |
Number of increase (decrease) in shares of stock classified as other. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |
Number of share options (or share units) exercised during the current period. |
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us-gaap |
Stock Issued During Period, Value, Employee Stock Purchase Plan |
Aggregate change in value for stock issued during the period as a result of employee stock purchase plan. |
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us-gaap |
Stock Issued During Period, Value, New Issues |
Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. |
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us-gaap |
Stock Issued During Period, Value, Treasury Stock Reissued |
Value of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement. |
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us-gaap |
Stock or Unit Option Plan Expense |
Amount of noncash expense for option under share-based payment arrangement. |
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us-gaap |
Stock Redeemed or Called During Period, Value |
Equity impact of the value of stock bought back by the entity at the exercise price or redemption price. |
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us-gaap |
Stock Repurchased During Period, Shares |
Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. |
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us-gaap |
Stock Repurchased During Period, Value |
Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. |
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us-gaap |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |
The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. |
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us-gaap |
Storm Damage Provision |
A noncash adjustment to the provision established for storm damage by an oil, gas, or utility company. |
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us-gaap |
Sublease Income |
Amount of sublease income excluding finance and operating lease expense. |
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us-gaap |
Tax Credit Carryforward, Amount |
The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. |
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us-gaap |
Tax Credit Carryforward, Valuation Allowance |
Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized. |
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us-gaap |
Taxes, Miscellaneous |
All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax. |
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us-gaap |
Taxes Payable, Current |
Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year One |
Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Deferred Costs, Noncurrent |
Amount of deferred cost, excluding capitalized cost related to contract with customer; classified as noncurrent. |
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us-gaap |
Increase (Decrease) in over Energy Recovery |
The change during the reporting period in the value of the asset created by an over recovery. An over recovery means that the basic energy product price based on the daily product price and exchange rate is less than the basic fuel price used in the calculation of the monthly retail energy product. |
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us-gaap |
Temporary Equity, Carrying Amount, Attributable to Parent |
Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. |
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us-gaap |
Temporary Equity, Other Changes |
Amount of increase (decrease) in temporary equity from changes classified as other. |
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us-gaap |
Treasury Stock, Shares |
Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. |
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us-gaap |
Treasury Stock, Value |
The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. |
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us-gaap |
Unamortized Debt Issuance Expense |
The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. |
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us-gaap |
Unamortized Loss Reacquired Debt, Noncurrent |
Unamortized Loss on Reacquired Debt is the loss incurred upon reacquisition or refinancing of debt, is treated as a deferred charge and amortized over the life of the new debt issued. |
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us-gaap |
Unrecognized Tax Benefits |
Amount of unrecognized tax benefits. |
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us-gaap |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions |
Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. |
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us-gaap |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities |
Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. |
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us-gaap |
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions |
Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. |
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us-gaap |
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions |
Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. |
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us-gaap |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued |
Amount of interest expense accrued for an underpayment of income taxes. |
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us-gaap |
Unrecognized Tax Benefits, Interest on Income Taxes Expense |
Amount of interest expense for an underpayment of income taxes. |
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us-gaap |
Unrecognized Tax Benefits, Period Increase (Decrease) |
Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns. |
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us-gaap |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations |
Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. |
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us-gaap |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate |
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. |
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us-gaap |
Utilities Operating Expense, Fuel Used |
Amount of operating expense for fuel used by regulated operation. |
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us-gaap |
Utilities Operating Expense, Maintenance and Operations |
Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation. |
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us-gaap |
Variable Lease, Cost |
Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases. |
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us-gaap |
Variable Lease, Income |
Amount of variable lease payments from operating, direct financing, and sales-type leases, excluding amount included in measurement of lease receivable. |
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us-gaap |
Weighted Average Number of Shares Outstanding, Diluted |
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. |
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us-gaap |
Weighted Average Number of Shares Outstanding, Basic |
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. |
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us-gaap |
Litigation Settlement, Amount Awarded from Other Party |
Amount awarded from other party in judgment or settlement of litigation. |
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us-gaap |
Other Receivables, Net, Current |
Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer. |
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us-gaap |
Treasury Stock, Common, Shares |
Number of previously issued common shares repurchased by the issuing entity and held in treasury. |
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us-gaap |
Stock Issued |
The fair value of stock issued in noncash financing activities. |
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us-gaap |
Debt Instrument, Convertible, Conversion Ratio |
Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. |
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us-gaap |
Income Tax Credits and Adjustments |
A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation |
Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress |
Period end amount of construction work in progress in public utility. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Fuel |
Period end amount of property, plant and equipment (PPE) related to fuels owned by the public utility. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Net |
Period end amount of total net PPE. |
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