| Line |
Label |
Object Class (Data type) |
Period Type |
Balance |
Report Element Name |
| 1 |
Postretirement Medical Plans with Prescription Drug Benefits [Hierarchy] |
Abstract |
|
|
us-gaap:PostretirementMedicalPlansWithPrescriptionDrugBenefitsAbstract |
| 2 |
Description of Postretirement Medical Plans with Prescription Drug Benefits |
Concept (Text/String) |
For Period |
|
us-gaap:DescriptionOfPostretirementMedicalPlansWithPrescriptionDrugBenefits |
| 3 |
Prescription Drug Benefit Subsidy, Effect Not Determined |
Concept (Yes/No) |
For Period |
|
us-gaap:PrescriptionDrugBenefitSubsidyEffectNotDetermined |
| 4 |
Prescription Drug Benefit, Reduction in Accumulated Postretirement Benefit Obligation for Subsidy |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugBenefitReductionInAccumulatedPostretirementBenefitObligationForSubsidy |
| 5 |
Prescription Drug Benefit, Effect of Subsidy on Net Periodic Postretirement Benefit Cost |
Concept (Monetary) |
For Period |
Credit |
us-gaap:PrescriptionDrugBenefitEffectOfSubsidyOnNetPeriodicPostretirementBenefitCost1 |
| 6 |
Postretirement Medical Plans with Prescription Drug Benefits, Description of Other Significant Change |
Concept (Text/String) |
For Period |
|
us-gaap:PostretirementMedicalPlansWithPrescriptionDrugBenefitsDescriptionOfOtherSignificantChange |
| 7 |
Prescription Drug Subsidy Receipts, Fiscal Year Maturity [Abstract] |
Concept (Text/String) |
For Period |
|
us-gaap:DisclosureOfExpectedGrossPrescriptionDrugSubsidyReceiptsAbstract |
| 8 |
Prescription Drug Subsidy Receipts, Next Twelve Months |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsNextTwelveMonths |
| 9 |
Prescription Drug Subsidy Receipts, Year Two |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsYearTwo1 |
| 10 |
Prescription Drug Subsidy Receipts, Year Three |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsYearThree1 |
| 11 |
Prescription Drug Subsidy Receipts, Year Four |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsYearFour1 |
| 12 |
Prescription Drug Subsidy Receipts, Year Five |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsYearFive1 |
| 13 |
Prescription Drug Subsidy Receipts, after Year Five |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsAfterYearFive |
| 14 |
Prescription Drug Subsidy Receipts, Remainder of Fiscal Year |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsRemainderOfFiscalYear |
| 15 |
Prescription Drug Subsidy Receipts, Rolling Maturity [Abstract] |
Concept (Text/String) |
For Period |
|
us-gaap:PrescriptionDrugSubsidyReceiptsRollingMaturityAbstract |
| 16 |
Prescription Drug Subsidy Receipts, Next Rolling Twelve Months |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsNextRollingTwelveMonths |
| 17 |
Prescription Drug Subsidy Receipts, Rolling Year Two |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsRollingYearTwo |
| 18 |
Prescription Drug Subsidy Receipts, Rolling Year Three |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsRollingYearThree |
| 19 |
Prescription Drug Subsidy Receipts, Rolling Year Four |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsRollingYearFour |
| 20 |
Prescription Drug Subsidy Receipts, Rolling Year Five |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsRollingYearFive |
| 21 |
Prescription Drug Subsidy Receipts, Rolling after Year Five |
Concept (Monetary) |
As Of |
Debit |
us-gaap:PrescriptionDrugSubsidyReceiptsRollingAfterYearFive |