| Line | Label | Object Class | Period Type | Balance | Report ElementName |
|---|---|---|---|---|---|
| 1 | 420000 - Disclosure - Asset Retirement Obligations | [Network] | http://fasb.org/us-gaap/role/disclosure/AssetRetirementObligations | ||
| 2 | Asset Retirement Obligation Disclosure [Abstract] | Abstract | us-gaap:AssetRetirementObligationDisclosureAbstract | ||
| 3 | Asset Retirement Obligation Disclosure [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:AssetRetirementObligationDisclosureTextBlock | |
| 4 | Asset Retirement Obligation [Abstract] | Abstract | us-gaap:AssetRetirementObligationAbstract | ||
| 5 | Asset Retirement Obligation, Current | Concept (Monetary) | As Of | Credit | us-gaap:AssetRetirementObligationCurrent |
| 6 | Asset Retirement Obligations, Noncurrent [Abstract] | Abstract | us-gaap:AssetRetirementObligationsNoncurrentAbstract | ||
| 7 | Mine Reclamation and Closing Liability, Noncurrent | Concept (Monetary) | As Of | Credit | us-gaap:MineReclamationAndClosingLiabilityNoncurrent |
| 8 | Oil and Gas Reclamation Liability, Noncurrent | Concept (Monetary) | As Of | Credit | us-gaap:OilAndGasReclamationLiabilityNoncurrent |
| 9 | Decommissioning Liability, Noncurrent | Concept (Monetary) | As Of | Credit | us-gaap:DecommissioningLiabilityNoncurrent |
| 10 | Spent Nuclear Fuel Obligation, Noncurrent | Concept (Monetary) | As Of | Credit | us-gaap:SpentNuclearFuelObligationNoncurrent |
| 11 | Accrued Capping, Closure, Post-closure and Environmental Costs, Noncurrent | Concept (Monetary) | As Of | Credit | us-gaap:AccruedCappingClosurePostClosureAndEnvironmentalCostsNoncurrent |
| 12 | Asset Retirement Obligations, Noncurrent, Total | Concept (Monetary) | As Of | Credit | us-gaap:AssetRetirementObligationsNoncurrent |
| 13 | Asset Retirement Obligation, Total | Concept (Monetary) | As Of | Credit | us-gaap:AssetRetirementObligation |
| 14 | Asset Retirement Obligations, Description | Concept (Text/String) | For Period | us-gaap:AssetRetirementObligationsDescription | |
| 15 | Asset Retirement Obligation, Legally Restricted Assets, Fair Value | Concept (Monetary) | As Of | Debit | us-gaap:AssetRetirementObligationLegallyRestrictedAssetsFairValue |
| 16 | Asset Retirement Obligations, Significant Changes | Concept (Text/String) | For Period | us-gaap:AssetRetirementObligationsSignificantChanges | |
| 17 | Asset Retirement Obligations, Liability Not Recognized | Concept (Text/String) | For Period | us-gaap:AssetRetirementObligationsLiabilityNotRecognized | |
| 18 | Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] | Abstract | us-gaap:AssetRetirementObligationRollForwardAnalysisRollForward | ||
| 19 | Asset Retirement Obligation, Beginning Balance | Concept (Monetary) | As Of | Credit | us-gaap:AssetRetirementObligation |
| 20 | Asset Retirement Obligation, Liabilities Incurred | Concept (Monetary) | For Period | Credit | us-gaap:AssetRetirementObligationLiabilitiesIncurred |
| 21 | Asset Retirement Obligation, Liabilities Settled | Concept (Monetary) | For Period | Debit | us-gaap:AssetRetirementObligationLiabilitiesSettled |
| 22 | Asset Retirement Obligation, Accretion Expense | Concept (Monetary) | For Period | Debit | us-gaap:AssetRetirementObligationAccretionExpense |
| 23 | Asset Retirement Obligation, Revision of Estimate | Concept (Monetary) | For Period | Credit | us-gaap:AssetRetirementObligationRevisionOfEstimate |
| 24 | Asset Retirement Obligation, Foreign Currency Translation Gain (Loss) | Concept (Monetary) | For Period | Credit | us-gaap:AssetRetirementObligationForeignCurrencyTranslationGainLoss |
| 25 | Asset Retirement Obligation, Period Increase (Decrease), Total | Concept (Monetary) | For Period | us-gaap:AssetRetirementObligationPeriodIncreaseDecrease | |
| 26 | Asset Retirement Obligation, Ending Balance | Concept (Monetary) | As Of | Credit | us-gaap:AssetRetirementObligation |
| 27 | Asset Retirement Obligation, Cash Paid to Settle | Concept (Monetary) | For Period | Credit | us-gaap:AssetRetirementObligationCashPaidToSettle |
| 28 | Table Text Block Supplement [Abstract] | Abstract | us-gaap:TableTextBlockSupplementAbstract | ||
| 29 | Schedule of Asset Retirement Obligations [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfAssetRetirementObligationsTableTextBlock | |
| 30 | Schedule of Change in Asset Retirement Obligation [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlock |