| Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Hierarchy] |
| AccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssets |
| PostEmploymentButPreRetirementCosts |
| Disclosure of accumulated benefit obligations and fair values of plan assets of pension plans and/or other employee benefit plans where the accumulated benefit obligation exceeds the fair value of plan assets. |
| Missing [Table] |
| Detail |
| [Hierarchy] |
| Not started |
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| us-gaap:ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock |
| http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits |