Details for Selection
| Standard label: | Postretirement Medical Plans with Prescription Drug Benefits, Description of Other Significant Change |
| Name: | us-gaap:PostretirementMedicalPlansWithPrescriptionDrugBenefitsDescriptionOfOtherSignificantChange |
| Documentation: | Any other disclosures provided to explain any significant changes in the benefit obligation or plan assets not otherwise apparent in the other disclosures required. Disclosure relates to the first period in which an employer includes the effects of the subsidy in measuring the accumulated postretirement benefit obligation and net periodic postretirement benefit cost. |
| Commentary: | |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For period (duration) |
| Balance type: | |
| Object class: | [Concept] |