| Line | Label | Object Class | Period Type | Balance | Report ElementName |
|---|---|---|---|---|---|
| 1 | 425000 - Disclosure - Environmental Remediation Obligations | [Network] | http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligations | ||
| 2 | Environmental Remediation Obligations [Abstract] | Abstract | us-gaap:EnvironmentalRemediationObligationsAbstract | ||
| 3 | Environmental Loss Contingency Disclosure [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:EnvironmentalLossContingencyDisclosureTextBlock | |
| 4 | Applicability, Impact and Conclusion of Environmental Loss Contingencies [Abstract] | Abstract | us-gaap:ApplicabilityImpactAndConclusionOfEnvironmentalLossContingenciesAbstract | ||
| 5 | Applicability and Impact of Environmental Laws | Concept (Text/String) | For Period | us-gaap:ApplicabilityAndImpactOfEnvironmentalLaws | |
| 6 | Environmental Applicability, Impact and Conclusion Disclosures | Concept (Text/String) | For Period | us-gaap:EnvironmentalApplicabilityImpactAndConclusionDisclosures | |
| 7 | Accrual for Environmental Loss Contingencies Disclosure [Abstract] | Abstract | us-gaap:AccrualForEnvironmentalLossContingenciesDisclosureAbstract | ||
| 8 | Accrual for Environmental Loss Contingencies, Material Changes in Accrual | Concept (Text/String) | For Period | us-gaap:AccrualForEnvironmentalLossContingenciesMaterialChangesInAccrual | |
| 9 | Accrual for Environmental Loss Contingencies [Roll Forward] | Abstract | us-gaap:AccrualForEnvironmentalLossContingenciesRollForward | ||
| 10 | Accrual for Environmental Loss Contingencies, Beginning Balance | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingencies |
| 11 | Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses | Concept (Monetary) | For Period | Debit | us-gaap:AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses |
| 12 | Accrual for Environmental Loss Contingencies, Payments | Concept (Monetary) | For Period | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesPayments1 |
| 13 | Accrual for Environmental Loss Contingencies, Increase (Decrease) for Acquisitions and Divestitures | Concept (Monetary) | For Period | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesIncreaseDecreaseForAcquisitionsAndDivestitures |
| 14 | Accrual for Environmental Loss Contingencies, Revision in Estimates | Concept (Monetary) | For Period | Debit | us-gaap:AccrualForEnvironmentalLossContingenciesIncreaseDecreaseForRevisionInEstimates |
| 15 | Accrual for Environmental Loss Contingencies, Foreign Currency Translation Gain (Loss) | Concept (Monetary) | For Period | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesForeignCurrencyTranslationGainLoss |
| 16 | Accrual for Environmental Loss Contingencies, Period Increase (Decrease), Total | Concept (Monetary) | For Period | us-gaap:AccrualForEnvironmentalLossContingenciesPeriodIncreaseDecrease | |
| 17 | Accrual for Environmental Loss Contingencies, Ending Balance | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingencies |
| 18 | Components of Environmental Loss Accrual [Abstract] | Abstract | us-gaap:ComponentsOfEnvironmentalLossAccrualAbstract | ||
| 19 | Accrual for Environmental Loss Contingencies, Material Components | Concept (Text/String) | For Period | us-gaap:AccrualForEnvironmentalLossContingenciesMaterialComponents | |
| 20 | Accrual for Environmental Loss Contingencies, Significant Assumptions | Concept (Text/String) | For Period | us-gaap:AccrualForEnvironmentalLossContingenciesSignificantAssumptions | |
| 21 | Accrual for Environmental Loss Contingencies, Component Amount | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesComponentAmount |
| 22 | Accrual for Environmental Loss Contingencies, Balance Sheet Classification [Abstract] | Abstract | us-gaap:AccrualForEnvironmentalLossContingenciesBalanceSheetClassificationAbstract | ||
| 23 | Accrual for Environmental Loss Contingencies [Abstract] | Abstract | us-gaap:AccrualForEnvironmentalLossContingenciesAbstract | ||
| 24 | Accrued Environmental Loss Contingencies, Current | Concept (Monetary) | As Of | Credit | us-gaap:AccruedEnvironmentalLossContingenciesCurrent |
| 25 | Accrued Environmental Loss Contingencies, Noncurrent | Concept (Monetary) | As Of | Credit | us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent |
| 26 | Accrual for Environmental Loss Contingencies, Total | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingencies |
| 27 | Accrual for Environmental Loss Contingencies, Reconciliation of Undiscounted Amount to Recorded Balance [Abstract] | Abstract | us-gaap:AccrualForEnvironmentalLossContingenciesReconciliationOfUndiscountedAmountToRecordedBalanceAbstract | ||
| 28 | Accrual for Environmental Loss Contingencies, Fiscal Year Maturity [Abstract] | Abstract | us-gaap:AccrualForEnvironmentalLossContingenciesFiscalYearMaturityAbstract | ||
| 29 | Accrual for Environmental Loss Contingencies, Gross, Fiscal Year Maturity [Abstract] | Abstract | us-gaap:AccrualForEnvironmentalLossContingenciesGrossAbstract | ||
| 30 | Accrual for Environmental Loss Contingencies, Undiscounted, Next Twelve Months | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYear |
| 31 | Accrual for Environmental Loss Contingencies, Undiscounted, Second Year | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear |
| 32 | Accrual for Environmental Loss Contingencies, Undiscounted, Third Year | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear |
| 33 | Accrual for Environmental Loss Contingencies, Undiscounted, Fourth Year | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear |
| 34 | Accrual for Environmental Loss Contingencies, Undiscounted, Fifth Year | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear |
| 35 | Accrual for Environmental Loss Contingencies, Undiscounted, after Fifth Year | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear |
| 36 | Accrual for Environmental Loss Contingencies, Gross, Total | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesGross |
| 37 | Accrual for Environmental Loss Contingencies, Discount | Concept (Monetary) | As Of | Debit | us-gaap:AccrualForEnvironmentalLossContingenciesDiscount |
| 38 | Accrual for Environmental Loss Contingencies, Discount Rate | Concept (Percent) | As Of | us-gaap:AccrualForEnvironmentalLossContingenciesDiscountRate | |
| 39 | Accrual for Environmental Loss Contingencies, Total | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingencies |
| 40 | Accrual for Environmental Loss Contingencies, Undiscounted, Remainder of Fiscal Year | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesUndiscountedDueInRemainderOfFiscalYear |
| 41 | Recorded Third-Party Recoveries Related to Environmental Remediation Obligations [Abstract] | Abstract | us-gaap:RecordedThirdPartyRecoveriesRelatedToEnvironmentalRemediationObligationsAbstract | ||
| 42 | Recorded Third-Party Environmental Recoveries [Table] | Table | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesTable | ||
| 43 | Balance Sheet Location [Axis] | Axis | us-gaap:BalanceSheetLocationAxis | ||
| 44 | Balance Sheet Location [Domain] | Member | us-gaap:BalanceSheetLocationDomain | ||
| 45 | Other Assets [Member] | Member | us-gaap:OtherAssetsMember | ||
| 46 | Other Current Assets [Member] | Member | us-gaap:OtherCurrentAssetsMember | ||
| 47 | Other Noncurrent Assets [Member] | Member | us-gaap:OtherNoncurrentAssetsMember | ||
| 48 | Other Liabilities [Member] | Member | us-gaap:OtherLiabilitiesMember | ||
| 49 | Other Current Liabilities [Member] | Member | us-gaap:OtherCurrentLiabilitiesMember | ||
| 50 | Other Noncurrent Liabilities [Member] | Member | us-gaap:OtherNoncurrentLiabilitiesMember | ||
| 51 | Other Investments [Member] | Member | us-gaap:OtherInvestmentsMember | ||
| 52 | Contract Holder Funds [Member] | Member | us-gaap:ContractHolderFundsMember | ||
| 53 | Accounts Payable and Accrued Liabilities [Member] | Member | us-gaap:AccountsPayableAndAccruedLiabilitiesMember | ||
| 54 | Prepaid Expenses and Other Current Assets [Member] | Member | us-gaap:PrepaidExpensesAndOtherCurrentAssetsMember | ||
| 55 | Recorded Third-Party Environmental Recoveries [Line Items] | LineItems | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesLineItems | ||
| 56 | Recorded Third-Party Environmental Recoveries, Description | Concept (Text/String) | For Period | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesDescription | |
| 57 | Recorded Third-Party Environmental Recoveries Receivable | Concept (Monetary) | As Of | Debit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesReceivable |
| 58 | Recorded Third-Party Environmental Recoveries, Amount | Concept (Monetary) | As Of | Debit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesAmount |
| 59 | Recorded Third-Party Environmental Recoveries, Balance Sheet Classification [Abstract] | Abstract | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesBalanceSheetClassificationAbstract | ||
| 60 | Recorded Third-Party Environmental Recoveries, Current | Concept (Monetary) | As Of | Debit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesCurrent |
| 61 | Recorded Third-Party Environmental Recoveries, Noncurrent | Concept (Monetary) | As Of | Debit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesNoncurrent |
| 62 | Recorded Third-Party Environmental Recoveries, Net, Total | Concept (Monetary) | As Of | Debit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesNet |
| 63 | Recorded Third Party Environmental Recoveries, Reconciliation of Undiscounted Amount to Recorded Balance [Abstract] | Abstract | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesReconciliationOfUndiscountedAmountToRecordedBalanceAbstract | ||
| 64 | Recorded Third-Party Environmental Recoveries, Net [Abstract] | Abstract | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesNetAbstract | ||
| 65 | Recorded Third-Party Environmental Recoveries, Undiscounted | Concept (Monetary) | As Of | Debit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesUndiscounted |
| 66 | Recorded Third-Party Environmental Recoveries, Discount | Concept (Monetary) | As Of | Credit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesDiscount |
| 67 | Recorded Third-Party Environmental Recoveries, Net, Total | Concept (Monetary) | As Of | Debit | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesNet |
| 68 | Recorded Third-Party Environmental Recoveries, Discount Rate | Concept (Percent) | As Of | us-gaap:RecordedThirdPartyEnvironmentalRecoveriesDiscountRate | |
| 69 | Schedule of Environmental Loss Contingencies by Site [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock | |
| 70 | Site Contingency [Table] | Table | us-gaap:SiteContingencyTable | ||
| 71 | Balance Sheet Location [Axis] | Axis | us-gaap:BalanceSheetLocationAxis | ||
| 72 | Balance Sheet Location [Domain] | Member | us-gaap:BalanceSheetLocationDomain | ||
| 73 | Other Assets [Member] | Member | us-gaap:OtherAssetsMember | ||
| 74 | Other Current Assets [Member] | Member | us-gaap:OtherCurrentAssetsMember | ||
| 75 | Other Noncurrent Assets [Member] | Member | us-gaap:OtherNoncurrentAssetsMember | ||
| 76 | Other Liabilities [Member] | Member | us-gaap:OtherLiabilitiesMember | ||
| 77 | Other Current Liabilities [Member] | Member | us-gaap:OtherCurrentLiabilitiesMember | ||
| 78 | Other Noncurrent Liabilities [Member] | Member | us-gaap:OtherNoncurrentLiabilitiesMember | ||
| 79 | Other Investments [Member] | Member | us-gaap:OtherInvestmentsMember | ||
| 80 | Contract Holder Funds [Member] | Member | us-gaap:ContractHolderFundsMember | ||
| 81 | Accounts Payable and Accrued Liabilities [Member] | Member | us-gaap:AccountsPayableAndAccruedLiabilitiesMember | ||
| 82 | Prepaid Expenses and Other Current Assets [Member] | Member | us-gaap:PrepaidExpensesAndOtherCurrentAssetsMember | ||
| 83 | Environmental Remediation Site [Axis] | Axis | us-gaap:EnvironmentalRemediationSiteAxis | ||
| 84 | Environmental Remediation Site [Domain] | Member | us-gaap:EnvironmentalRemediationSiteDomain | ||
| 85 | Environmental Remediation Contingency [Axis] | Axis | us-gaap:EnvironmentalRemediationContingencyAxis | ||
| 86 | Environmental Remediation Contingency [Domain] | Member | us-gaap:EnvironmentalRemediationContingencyDomain | ||
| 87 | Statistical Measurement [Axis] | Axis | srt:RangeAxis | ||
| 88 | Statistical Measurement [Domain] | Member | srt:RangeMember | ||
| 89 | Maximum [Member] | Member | srt:MaximumMember | ||
| 90 | Minimum [Member] | Member | srt:MinimumMember | ||
| 91 | Site Contingency [Line Items] | LineItems | us-gaap:SiteContingencyLineItems | ||
| 92 | Accrual for Environmental Loss Contingencies | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingencies |
| 93 | Accrual for Environmental Loss Contingencies, Discount | Concept (Monetary) | As Of | Debit | us-gaap:AccrualForEnvironmentalLossContingenciesDiscount |
| 94 | Accrual for Environmental Loss Contingencies, Discount Rate | Concept (Percent) | As Of | us-gaap:AccrualForEnvironmentalLossContingenciesDiscountRate | |
| 95 | Accrual for Environmental Loss Contingencies, Gross | Concept (Monetary) | As Of | Credit | us-gaap:AccrualForEnvironmentalLossContingenciesGross |
| 96 | Site Contingency, Name of Site | Concept (Text/String) | For Period | us-gaap:SiteContingencyNameOfSite | |
| 97 | Site Contingency, Management Assessment Process | Concept (Text/String) | For Period | us-gaap:SiteContingencyManagementAssessmentProcess | |
| 98 | Site Contingency, Accrual, Assumptions | Concept (Text/String) | For Period | us-gaap:SiteContingencyAccrualAssumptions | |
| 99 | Site Contingency, Circumstances Impacting Precision of Estimate | Concept (Text/String) | For Period | us-gaap:SiteContingencyCircumstancesImpactingPrecisionOfEstimate | |
| 100 | Site Contingency, Factors Changing Estimate | Concept (Text/String) | For Period | us-gaap:SiteContingencyFactorsChangingEstimate | |
| 101 | Site Contingency, Loss Inestimable Explanation | Concept (Text/String) | For Period | us-gaap:SiteContingencyLossInestimableExplanation | |
| 102 | Site Contingency, Indication Accrual May Change | Concept (Text/String) | For Period | us-gaap:SiteContingencyIndicationAccrualMayChange | |
| 103 | Site Contingency, Loss Exposure Not Accrued, Description | Concept (Text/String) | For Period | us-gaap:SiteContingencyLossExposureNotAccruedDescription | |
| 104 | Site Contingency, Loss Exposure Not Accrued, Best Estimate | Concept (Monetary) | For Period | Debit | us-gaap:SiteContingencyLossExposureNotAccruedBestEstimate |
| 105 | Site Contingency, Loss Exposure Not Accrued, Third Party Recovery Commentary | Concept (Text/String) | For Period | us-gaap:SiteContingencyLossExposureNotAccruedThirdPartyRecoveryCommentary | |
| 106 | Site Contingency, Loss Exposure in Excess of Accrual, Description | Concept (Text/String) | For Period | us-gaap:SiteContingencyLossExposureInExcessOfAccrualDescription | |
| 107 | Site Contingency, Loss Exposure in Excess of Accrual, Best Estimate | Concept (Monetary) | For Period | Debit | us-gaap:SiteContingencyLossExposureInExcessOfAccrualBestEstimate |
| 108 | Site Contingency, Unasserted Claims | Concept (Text/String) | For Period | us-gaap:SiteContingencyUnassertedClaims | |
| 109 | Site Contingency, Uncertainties from Joint and Several Liability | Concept (Text/String) | For Period | us-gaap:SiteContingencyUncertaintiesFromJointAndSeveralLiability | |
| 110 | Site Contingency, Uncertainties from Insurance | Concept (Text/String) | For Period | us-gaap:SiteContingencyUncertaintiesFromInsurance | |
| 111 | Site Contingency, Time Frame of Disbursements | Concept (Text/String) | For Period | us-gaap:SiteContingencyTimeFrameOfDisbursements | |
| 112 | Site Contingency, Time Frame for Recognized Probable Recoveries | Concept (Text/String) | For Period | us-gaap:SiteContingencyTimeFrameForRecognizedProbableRecoveries | |
| 113 | Site Contingency, Names of Other Potentially Responsible Parties | Concept (Text/String) | For Period | us-gaap:SiteContingencyNamesOfOtherPotentiallyResponsibleParties | |
| 114 | Site Contingency, Nature and Terms of Cost Sharing Relationships | Concept (Text/String) | For Period | us-gaap:SiteContingencyNatureAndTermsOfCostSharingRelationships | |
| 115 | Site Contingency, Status of Regulatory Proceedings | Concept (Text/String) | For Period | us-gaap:SiteContingencyStatusOfRegulatoryProceedings | |
| 116 | Site Contingency, Estimated Time Frame to Resolve Contingency | Concept (Text/String) | For Period | us-gaap:SiteContingencyEstimatedTimeFrameToResolveContingency | |
| 117 | Site Contingency, Environmental Remediation Costs Recognized | Concept (Text/String) | For Period | us-gaap:SiteContingencyEnvironmentalRemediationCostsRecognized | |
| 118 | Site Contingency, Recovery from Third Party of Environmental Remediation Cost | Concept (Monetary) | For Period | Credit | us-gaap:SiteContingencyRecoveryFromThirdPartyOfEnvironmentalRemediationCost |
| 119 | Environmental Property Sale, Disposal or Abandonment Costs [Abstract] | Abstract | us-gaap:EnvironmentalPropertySaleDisposalOrAbandonmentCostsAbstract | ||
| 120 | Environmental Exit Costs by Cost [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:EnvironmentalExitCostsByCostTextBlock | |
| 121 | Schedule of Environmental Exit Cost [Table] | Table | us-gaap:ScheduleOfEnvironmentalExitCostTable | ||
| 122 | Environmental Exit Cost by Property [Axis] | Axis | us-gaap:EnvironmentalExitCostByPropertyAxis | ||
| 123 | Environmental Exit Costs, Name of Property [Domain] | Member | us-gaap:EnvironmentalExitCostsNameOfPropertyDomain | ||
| 124 | Statistical Measurement [Axis] | Axis | srt:RangeAxis | ||
| 125 | Statistical Measurement [Domain] | Member | srt:RangeMember | ||
| 126 | Maximum [Member] | Member | srt:MaximumMember | ||
| 127 | Minimum [Member] | Member | srt:MinimumMember | ||
| 128 | Environmental Exit Cost [Line Items] | LineItems | us-gaap:EnvironmentalExitCostLineItems | ||
| 129 | Environmental Exit Costs, Nature of Costs | Concept (Text/String) | For Period | us-gaap:EnvironmentalExitCostsNatureOfCosts | |
| 130 | Environmental Exit Costs, Anticipated Cost | Concept (Monetary) | For Period | Debit | us-gaap:EnvironmentalExitCostsAnticipatedCost |
| 131 | Environmental Exit Costs, Costs Accrued to Date | Concept (Monetary) | As Of | Credit | us-gaap:EnvironmentalExitCostsCostsAccruedToDate |
| 132 | Environmental Exit Costs, Reasonably Possible Additional Loss | Concept (Monetary) | For Period | Debit | us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss |
| 133 | Environmental Exit Costs, Reasonably Possible Additional Losses, Best Estimate | Concept (Monetary) | For Period | Debit | us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLossesBestEstimate |
| 134 | Environmental Exit Costs, Impairment Assessment | Concept (Text/String) | For Period | us-gaap:EnvironmentalExitCostsImpairmentAssessment | |
| 135 | Environmental Exit Costs, Assets Previously Disposed, Liability for Remediation | Concept (Monetary) | As Of | Credit | us-gaap:EnvironmentalExitCostsAssetsPreviouslyDisposedLiabilityForRemediation |
| 136 | Environmental Remediation Costs Recognized [Abstract] | Abstract | us-gaap:EnvironmentalRemediationCostsRecognizedAbstract | ||
| 137 | Environmental Costs Recognized, Capitalized | Concept (Monetary) | As Of | Debit | us-gaap:EnvironmentalCostsRecognizedCapitalized |
| 138 | Environmental Costs Recognized, Capitalized in Period | Concept (Monetary) | For Period | Debit | us-gaap:EnvironmentalCostsRecognizedCapitalizedInPeriod |
| 139 | Environmental Remediation Costs Recognized Disclosure | Concept (Text/String) | For Period | us-gaap:EnvironmentalRemediationCostsRecognizedDisclosure | |
| 140 | Environmental Remediation Expense | Concept (Monetary) | For Period | Debit | us-gaap:EnvironmentalRemediationExpense |
| 141 | Environmental Costs Recognized, Recovery Credited to Expense | Concept (Monetary) | For Period | Credit | us-gaap:EnvironmentalCostsRecognizedRecoveryCreditedToExpense |
| 142 | Environmental Cost Recognized, Caption | Concept (Text/String) | For Period | us-gaap:EnvironmentalCostRecognizedCaption |