Details for Selection
| Standard label: | Coal Industry Retiree Health Benefit Act of 1992, Estimated Amount of Total Obligation |
| Name: | us-gaap:CoalIndustryRetireeHealthBenefitActOf1992EstimatedAmountOfTotalObligation |
| Documentation: | Amount of medical and death benefits that will be provided by the Combined Benefit (established by the Coal Industry Retiree Health Benefit Act) to all beneficiaries of certain earlier trusts who were actually receiving benefits as of July 20, 1992. |
| Commentary: | |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As of (instant) |
| Balance type: | Credit |
| Object class: | [Concept] |