| Standard label: | Defined Benefit Plan, Expected Amortization, Next Fiscal Year |
| Name: | us-gaap:DefinedBenefitPlanExpectedAmortizationNextFiscalYear |
| Documentation: | Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DefinedBenefitPlanExpectedAmortizationNextFiscalYear |
| Label | Role | Language |
| Defined Benefit Plan, Expected Amortization, Next Fiscal Year | http://www.xbrl.org/2003/role/label | en-US |
| Defined Benefit Plan, Expected Amortization, Next Fiscal Year, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 715 20 50 1 (s) | http://fasb.org/us-gaap/role/ref/legacyRef | 715 |