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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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 |
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 |
Exploration Expense |
"Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or ""G&G"" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells." |
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us-gaap |
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent |
Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss. |
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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 |
Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture |
Value, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). |
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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 |
Other Assets, Noncurrent |
Amount of noncurrent assets 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, Conversion of Convertible Securities |
The gross value of stock issued during the period upon the conversion of convertible securities. |
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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 |
Accretion Expense |
Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations. |
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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 to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities |
The sum of adjustments which are added to or deducted from net income or loss, including the portion attributable to noncontrolling interest, to reflect cash provided by or used in operating activities, in accordance with the indirect cash flow method. |
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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 |
Amortization of Debt Discount (Premium) |
Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. |
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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 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, Period Increase (Decrease) |
Amount of increase (decrease) in asset retirement obligations. |
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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 |
Available-for-sale Securities, Current |
Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. |
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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 |
Capital Lease Obligations, Noncurrent |
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 and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. |
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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 |
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 |
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, 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 |
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 |
Cost of Goods Sold (Deprecated 2018-01-31) |
Total costs related to goods produced and sold during the reporting period. |
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us-gaap |
Cost of Goods Sold, Depreciation and Amortization (Deprecated 2018-01-31) |
Depreciation of property, plant and equipment directly related to goods produced and sold during the reporting period. |
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us-gaap |
Cost of Services, Depreciation (Deprecated 2018-01-31) |
The expense recognized in the current period that allocates the cost of a tangible asset used in providing revenue generating services over the asset's useful life. |
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us-gaap |
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent |
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as noncurrent. |
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us-gaap |
Derivative Liability, Current |
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, 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 |
Earnings Per Share, Basic and Diluted |
The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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 |
Effect of Exchange Rate on Cash and Cash Equivalents |
Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. |
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us-gaap |
Embedded Derivative, Fair Value of Embedded Derivative, Net |
Net fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as assets, net of those classified as liabilities. |
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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 |
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 |
Notes Payable, Current |
Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. |
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us-gaap |
Operating Expenses |
Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. |
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us-gaap |
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |
Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. |
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us-gaap |
Gain (Loss) on Sale of Derivatives |
The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings. |
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us-gaap |
Gain (Loss) on Sale of Investments |
The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities. |
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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, Net of Tax, Including Portion Attributable to Noncontrolling Interest |
Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest. |
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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 Inventories |
The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. |
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us-gaap |
Increase (Decrease) in Prepaid Expense and Other Assets |
Amount of increase (decrease) in prepaid expenses, and assets classified as other. |
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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 |
Interest and Other Income |
The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business). |
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us-gaap |
Interest Expense, Other |
Amount of interest expense classified as other. |
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us-gaap |
Interest Paid, Including Capitalized Interest, Operating and Investing Activities |
Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to 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; classified as operating and investing activities. |
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us-gaap |
Inventory, Net |
Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. |
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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 |
Notes Payable, Noncurrent |
Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. |
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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 |
Operating Income (Loss) |
The net result for the period of deducting operating expenses from operating revenues. |
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us-gaap |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (Deprecated 2012-01-31) |
Adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity, net of tax. |
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us-gaap |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent |
Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. |
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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 |
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 |
Other Income |
Amount of revenue and income classified as other. |
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us-gaap |
Other Increase (Decrease) in Environmental Liabilities |
Other increase (decrease) not attributable to current expense nor cash payments during an accounting period in estimated obligations recorded for probable future costs attributable to environmental contamination issues. |
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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 Noncash Income |
Amount of income or gain included in net income that result in no cash inflow (outflow), 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 |
Prepaid Expense and Other Assets, Current |
Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. |
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us-gaap |
Proceeds from Sale and Maturity of Debt Securities, Available-for-sale |
Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). |
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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 |
Proceeds from Stock Options Exercised |
Amount of cash inflow from exercise of option under share-based payment arrangement. |
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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 |
Repayments of Long-term Capital Lease Obligations |
The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). |
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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 Secured Debt |
The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. |
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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 |
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 |
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 |
Stock Issued During Period, Shares, Conversion of Convertible Securities |
Number of shares issued during the period as a result of the conversion of convertible securities. |
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us-gaap |
Unrealized Gain (Loss) on Derivatives |
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. |
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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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