Details for Selection
| Standard label: | Increase (Decrease) in Prepaid Pension Costs |
| Name: | us-gaap:IncreaseDecreaseInPrepaidPensionCosts |
| Documentation: | The increase (decrease) during the reporting period in prepaid pension costs. |
| Commentary: | |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For period (duration) |
| Balance type: | Credit |
| Object class: | [Concept] |