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| Accumulated Postemployment Benefit Obligations, Changes In [Roll Forward] |
| ChangesInAccumulatedPostemploymentBenefitObligations |
| PostEmploymentButPreRetirementCosts |
| Disclosure of the change in the accumulated postemployment benefit obligation from the beginning to the end of the period. |
| Missing [Table] |
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| us-gaap:ScheduleOfChangesInAccumulatedPostemploymentBenefitObligationsTableTextBlock |
| List of human readable examples |
| List of machine readable examples |
| http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits | XML | HTML |