IndexChange in Assumptions for Defined Benefit Plans [Member]
| Name | ChangeInAssumptionsForPensionPlansMember |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | nonnum:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
Labels
| Text | Lang | Role | Container role |
|---|---|---|---|
| Revision in assumptions used in calculating benefit obligation and cost associated with defined benefit plan. Includes, but is not limited to, change in mortality assumption and discount rate. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Change in Assumptions for Defined Benefit Plans [Member] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |