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 |
Deferred Compensation Arrangement with Individual, Compensation Expense |
The compensation expense recognized during the period pertaining to the deferred compensation arrangement. |
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us-gaap |
Assets for Plan Benefits, Defined Benefit Plan |
Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans. |
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us-gaap |
Income Taxes Paid |
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. |
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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 Number of Employees |
Number of persons employed by the Entity |
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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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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, Current |
Amount, after 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 |
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 Liabilities, Current |
Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. 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 |
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 |
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) |
Amount of increase (decrease) in allowance for credit loss on accounts receivable. |
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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, 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 |
Assets, Noncurrent, Other than Noncurrent Investments and Property, Plant and Equipment |
Sum of the carrying amounts as of the balance sheet date of all assets, excluding property, plant, and equipment and other property and investments, that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Charges and Other Assets. |
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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 |
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 Surrender Value of Life Insurance |
Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. |
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us-gaap |
Common Stock, Dividends, Per Share, Declared |
Aggregate dividends declared during the period for each share of common stock outstanding. |
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us-gaap |
Common Stock, No Par Value |
Face amount per share of no-par value 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 |
Common Stock, Shares, Outstanding |
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. |
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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 |
Construction in Progress Expenditures Incurred but Not yet Paid |
Future cash outflow to pay for construction in progress expenditures that have occurred. |
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us-gaap |
Contract with Customer, Asset, after Allowance for Credit Loss, Current |
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, classified as current. |
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us-gaap |
Contract with Customer, Liability, Noncurrent |
Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. |
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us-gaap |
Contributions in Aid of Construction |
"Developers, builders, governmental agencies and municipalities will provide the entity with cash, or in some cases property, to extend its services to their properties. Nonrefundable contributions are recorded as contributions in aid of construction (""CIAC"")." |
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us-gaap |
Cost of Services, Environmental Remediation (Deprecated 2018-01-31) |
Cost incurred in providing environmental engineering and consulting; environmental testing and analysis; and remediation services during the reporting period. |
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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 Advances for Construction |
For utilities only, represents the carrying amount of the liability as of the balance sheet date for payments received by a utility from its customers in advance of performing its obligations under terms of its construction agreements. |
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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, Unamortized Discount |
Amount, after accumulated amortization, of debt discount. |
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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 |
Debt Issuance Costs, Noncurrent, Net |
Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. |
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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 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, Charitable Contribution Carryforwards |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards. |
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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 of Valuation Allowance, Current |
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as current. |
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us-gaap |
Deferred Tax Assets, Operating Loss Carryforwards |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. |
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us-gaap |
Deferred Tax Assets, Other |
Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. |
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us-gaap |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Compensated Absences |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensated absences (includes, but not limited to, sick and personal days). |
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us-gaap |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation. |
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us-gaap |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits. |
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us-gaap |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts. |
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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, Deferred Expense, Debt Issuance Costs |
Amount of deferred tax liability attributable to taxable temporary differences from debt issuance costs. |
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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, Other |
Amount of deferred tax liability attributable to taxable temporary differences classified as other. |
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us-gaap |
Deferred Tax Liabilities, Property, Plant and Equipment |
Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. |
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us-gaap |
Deferred Tax Liabilities, Regulatory Assets |
Amount of deferred tax liability attributable to taxable temporary differences from regulatory assets. |
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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, Plan Assets, Increase (Decrease) for Actual Return (Loss) |
Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. |
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us-gaap |
Defined Benefit Plan, Amortization of Gain (Loss) |
Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase |
Weighted average rate increase of compensation, used to determine benefit obligation 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, 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, Expected Long-term Rate of Return on Plan Assets |
Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, 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, Benefit Obligation |
Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Plan Assets, Contributions by Employer |
Amount of contribution received by defined benefit plan from employer which increases plan assets. |
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us-gaap |
Defined Benefit Plan, Estimated Future Employer Contributions in Current 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 in the current remaining fiscal period. 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 |
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 |
Defined Benefit Plan, Expected Contributions in Current Fiscal Year (Deprecated 2017-01-31) |
Amount of the employer's best estimate of contributions expected to be paid to the plan in the current fiscal period. |
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us-gaap |
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years |
Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year. |
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us-gaap |
Defined Benefit Plan, Expected Future Benefit Payment, Year One |
Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year. |
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us-gaap |
Defined Benefit Plan, Expected Future Benefit Payment, Year Five |
Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year. |
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us-gaap |
Defined Benefit Plan, Expected Future Benefit Payment, Year Four |
Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year. |
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us-gaap |
Defined Benefit Plan, Expected Future Benefit Payment, Year Three |
Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year. |
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us-gaap |
Defined Benefit Plan, Expected Future Benefit Payment, Year Two |
Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year. |
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us-gaap |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |
Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. |
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us-gaap |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Plan Assets, Amount |
Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. |
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us-gaap |
Regulated Operating Revenue |
The total amount of regulated operating revenues recognized during the period. |
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us-gaap |
Defined Benefit Plan, Service Cost |
Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. |
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us-gaap |
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year (Deprecated 2017-01-31) |
Amount of employer's best estimate 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. |
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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 |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |
Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. |
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us-gaap |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match |
Percentage employer matches of the employee's percentage contribution matched. |
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us-gaap |
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Amount (Deprecated 2013-01-31) |
Maximum amount per employee, by the terms of the plan, that the employer may contribute to a defined contribution plan. |
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us-gaap |
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent (Deprecated 2013-01-31) |
Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan. |
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us-gaap |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent |
Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. |
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us-gaap |
Depreciation, Depletion and Amortization |
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. |
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us-gaap |
Derivative Financial Instruments, Liabilities, Fair Value Disclosure (Deprecated 2013-01-31) |
Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date. |
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us-gaap |
Dividends, Common Stock |
Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). |
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us-gaap |
Dividends Payable, Current |
Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. 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 |
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 |
Gain (Loss) on Disposition of Property Plant Equipment |
Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. |
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us-gaap |
General and Administrative Expense |
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. |
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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 Tax Examination, Penalties and Interest Expense |
The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations. |
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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 Tax Expense (Benefit), Continuing Operations (Deprecated 2013-01-31) |
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, 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 increase (decrease) in the income tax rates. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount |
Amount of the difference between reported income tax expense (benefit) and the 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 at Federal Statutory Income Tax Rate, Amount |
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Life Insurance, 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 life insurance expense. |
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us-gaap |
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, 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 state and local income tax expense (benefit). |
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us-gaap |
Effective Income Tax Rate Reconciliation, Tax Credit, Investment, 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 investment tax credit. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Tax Exempt Income, 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 income (loss) exempt from income taxes. |
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us-gaap |
Increase (Decrease) in Accounts and Other Receivables |
The increase (decrease) during the reporting period in the amount due from customers for the credit sale of goods and services; includes accounts receivable and other types of receivables. |
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us-gaap |
Increase (Decrease) in Accounts Payable and Accrued Liabilities |
The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid. |
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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 Notes Receivables |
The increase (decrease) during the reporting period of the amounts due from borrowers for outstanding secured or unsecured loans evidenced by a note. |
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us-gaap |
Increase (Decrease) in Restricted Cash |
The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities. |
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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 |
Interest Expense |
Amount of the cost of borrowed funds accounted for as interest expense. |
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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 |
Regulated Operating Revenue, Other |
The amount of regulated other operating revenues recognized during the period. |
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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 |
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 |
Liability for Uncertainty in Income Taxes, Current |
Amount recognized for uncertainty in income taxes classified as current. |
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us-gaap |
Line of Credit Facility, Average Outstanding Amount |
Average amount borrowed under the credit facility during the period. |
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us-gaap |
Line of Credit Facility, Interest Rate at Period End |
The effective interest rate at the end of the reporting period. |
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us-gaap |
Line of Credit Facility, Interest Rate During Period |
The effective interest rate during the reporting period. |
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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 |
Long-term Debt, Current Maturities |
Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. |
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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 |
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 |
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 Debt, Excluding Current Maturities |
Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. |
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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) Financing Activities, Continuing Operations |
Amount of cash inflow (outflow) of financing activities, excluding 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 |
Regulated Operating Revenue, Water |
The amount of regulated water operating revenues recognized during the period. |
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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 Cash Provided by (Used in) Operating Activities, Continuing Operations |
Amount of cash inflow (outflow) from operating activities, excluding 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 |
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 |
Financing Receivable, after Allowance for Credit Loss, Noncurrent |
Amount, after allowance for credit loss, of financing receivable, classified as noncurrent. |
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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, 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 Leases, Income Statement, Lease Revenue |
The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. |
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us-gaap |
Other Assets, Noncurrent |
Amount of noncurrent assets classified as other. |
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us-gaap |
Other Labor-related Expenses |
Amount of labor-related expenses classified as other. |
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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 |
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 Postretirement Benefits Cost (Reversal of Cost) |
Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits. |
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us-gaap |
Liability, Other Postretirement Defined Benefit Plan, Noncurrent |
Amount of liability, recognized in statement of financial position, for defined benefit other postretirement plan, classified as noncurrent. Excludes pension plan. |
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us-gaap |
Other Receivables, Gross, Current |
Amount, before allowance, of receivables classified as other, due within one year or the operating cycle, if longer. |
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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 of Debt Issuance Costs |
The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. |
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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 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 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 Waste Water Systems |
The cash outflow for the purchase of waste water systems which includes the waste treatment and disposal facility and equipment to households and industry. |
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us-gaap |
Payments to Acquire Water and Waste Water Systems |
The cash outflow for the purchase of a facility and equipment that provides water supply which includes wells, reservoirs, pumping stations, and control facilities; and waste water systems which includes the waste treatment and disposal facility and equipment to households and industry. |
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us-gaap |
Payments to Acquire Water Systems |
The cash outflow for the purchase of a facility and equipment that provides water supply which includes wells, reservoirs, pumping stations, and control facilities. |
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us-gaap |
Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent |
Amount of liability, recognized in statement of financial position, for pension, other postretirement and postemployment benefits, classified as noncurrent. |
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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 |
Proceeds from Advances for Construction |
The cash inflow from borrowing by the entity from developers, builders, government agencies and municipalities for construction that are repaid in cash, generally on a straight-line basis over periods ranging from five to forty years. |
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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 Life Insurance Policy |
Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy. |
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us-gaap |
Proceeds from Lines of Credit |
Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. |
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us-gaap |
Proceeds from (Repayments of) Bank Overdrafts |
The net cash inflow or outflow from the excess drawing from an existing cash balance, which will be honored by the bank but reflected as a loan to the drawer. |
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us-gaap |
Proceeds from (Repayments of) Lines of Credit |
The net cash inflow or cash outflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets). |
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us-gaap |
Proceeds from Sale of Property, Plant, and Equipment |
The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. |
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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, Additions |
Total increase in earnings in the period representing the cost of equity (based on assumed rate of return) and/or borrowed funds (based on interest rate) used to finance construction of regulated assets, which is expected to be recovered through rate adjustments. |
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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, Allowance for Funds Used During Construction, Rate |
Effective rate, including composite rate, of cost of financing additions to qualifying regulated assets, commonly called allowance for funds used during construction. |
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us-gaap |
Public Utilities, Inventory |
The period end amount for a type of inventory held by the utility in a schedule of inventories. |
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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, 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, Disclosure of Composite Depreciation Rate for Plants in Service |
Composite depreciation rate for public utility plants in service. |
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us-gaap |
Public Utilities, Property, Plant and Equipment, Net |
Period end amount of total net PPE. |
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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 |
Real Estate Tax Expense |
A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land). |
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us-gaap |
Receivables, Net, Current |
The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. |
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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 |
Regulatory Liability, Current |
The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period. |
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us-gaap |
Regulatory Liability, Noncurrent |
The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. |
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us-gaap |
Repayments of Advances for Construction |
The cash outflow for the payments made by the entity, generally on a straight-line basis over periods ranging from five to forty years to developers, builders, government agencies and municipalities for borrowings received in construction. |
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us-gaap |
Repayments of Lines of Credit |
Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. |
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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 |
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 Stock or Unit Expense |
Amount of noncash expense for award of restricted stock or unit under share-based payment arrangement. |
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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, Excluding Assessed Tax |
Amount, excluding 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 |
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 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |
The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. |
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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 |
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 |
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, Restricted Stock Award, Gross |
Aggregate value of stock related to Restricted Stock Awards issued during the period. |
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us-gaap |
Stock Repurchased and Retired During Period, Shares |
Number of shares that have been repurchased and retired during the period. |
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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 |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased |
The remaining 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 |
Taxes, Other |
Amount of tax expense classified as other. |
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|
us-gaap |
Time Sharing Transactions, Stated Interest Rates for Notes Receivable, Maximum (Deprecated 2016-01-31) |
Maximum end of range of stated interest rates of notes receivable. |
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|
us-gaap |
Time Sharing Transactions, Stated Interest Rates for Notes Receivable, Minimum (Deprecated 2016-01-31) |
Minimum end of range of stated interest rates of notes receivable. |
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|
us-gaap |
Time-sharing Transactions, Stated Interest Rate for Notes Receivable |
Stated interest rate of notes receivable from time-sharing transactions. |
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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 |
Treasury Stock, Common, Value |
Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury. |
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us-gaap |
Treasury Stock, Shares, Acquired |
Number of shares that have been repurchased during the period and are being held in treasury. |
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us-gaap |
Treasury Stock, Value, Acquired, Cost Method |
Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. |
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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 |
Unbilled Receivables, Current |
Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. |
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us-gaap |
Utilities Operating Expense |
Amount of operating expense of regulated operation. |
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us-gaap |
Utilities Operating Expense, Depreciation and Amortization |
Amount of operating expense for depreciation and amortization of 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 |
Utilities Operating Expense, Taxes |
Amount of operating expense for taxes other than income taxes of regulated operation. |
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us-gaap |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount |
Amount of valuation and qualifying accounts and reserves. |
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us-gaap |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense |
Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. |
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us-gaap |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction |
Amount of decrease in valuation and qualifying accounts and reserves. |
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us-gaap |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Addition, Recovery |
Amount of increase in valuation and qualifying accounts and reserves from recovery of amount previously written off or reestablishment of reserve previously utilized. |
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|
us-gaap |
Weighted Average Number Diluted Shares Outstanding Adjustment |
The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. |
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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 |
Sale of Stock, Consideration Received on Transaction |
Cash received on stock transaction after deduction of issuance costs. |
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|
us-gaap |
Shares Issued, Price Per Share |
Per share or per unit amount of equity securities issued. |
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|
us-gaap |
Stock Issued During Period, Shares, New Issues |
Number of new stock issued during the period. |
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|
us-gaap |
Interest Expense, Debt |
Amount of the cost of borrowed funds accounted for as interest expense for debt. |
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|
srt |
84417 |
None |
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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, 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 |
Deferred Compensation Liability, Current and Noncurrent |
Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. |
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us-gaap |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) |
Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. |
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us-gaap |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate |
Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Benefits Paid (Deprecated 2017-01-31) |
The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. |
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us-gaap |
Defined Benefit Plan, Funded (Unfunded) Status of Plan |
Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. |
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us-gaap |
Defined Benefit Plan, Interest Cost |
Amount of cost recognized for passage of time related to defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |
Amount of net periodic benefit cost (credit) for defined benefit plan. |
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us-gaap |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment |
Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan. |
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us-gaap |
Employee-related Liabilities, Current |
Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. 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 |
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 |
Effective Income Tax Rate Reconciliation, Other Reconciling Items, 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 tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments. |
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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 |
Liabilities, Other than Long-term Debt, Noncurrent |
Aggregated carrying amounts of obligations as of the balance sheet date, excluding long-term debt, incurred as part of the normal operations that are expected to be paid after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Credits and Other Liabilities. |
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us-gaap |
Net Cash Provided by (Used in) Investing Activities, Continuing Operations |
Amount of cash inflow (outflow) of investing activities, excluding 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 Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component |
Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits. |
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us-gaap |
Preferred Stock, Shares Authorized |
The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. |
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us-gaap |
Preferred Stock, Shares Issued |
Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. |
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us-gaap |
Regulatory Assets, Noncurrent |
Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. |
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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 Cash Equivalents, Noncurrent |
Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. 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 |
Stock Repurchased and Retired During Period, Value |
Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). |
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