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| Effect of Significant Unobservable Inputs, Changes in Plan Assets [Roll Forward] |
| EffectOfSignificantUnobservableInputsChangesInPlanAssets |
| PostEmploymentButPreRetirementCosts |
| Disclosure of the effect of fair value measurements using significant unobservable inputs (Level 3) on changes in plan assets of pension plans and/or other employee benefit plans for the period. |
| Missing [Table] |
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| us-gaap:ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock |
| List of human readable examples |
| List of machine readable examples |
| http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits | XML | HTML |