Component: Postretirement Medical Plans with Prescription Drug Benefits [Hierarchy]

Line	Label	Object Class	Period Type	Balance	Name
1	Postretirement Medical Plans with Prescription Drug Benefits [Hierarchy]	*	*	*	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	As Of	Debit	us-gaap:PrescriptionDrugBenefitEffectOfSubsidyOnNetPeriodicPostretirementBenefitCost
6	Postretirement Medical Plans with Prescription Drug Benefits, Description of Other Significant Change	[Concept] Text/String	For Period	*	us-gaap:PostretirementMedicalPlansWithPrescriptionDrugBenefitsDescriptionOfOtherSignificantChange