| Standard label: | Postemployment Benefits Liability |
| Name: | us-gaap:PostemploymentBenefitsLiabilityCurrentAndNoncurrent |
| Documentation: | The carrying amount as of the balance sheet date of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PostemploymentBenefitsLiabilityCurrentAndNoncurrent |
| Label | Role | Language |
| Postemployment Benefits Liability | http://www.xbrl.org/2003/role/label | en-US |
| Postemployment Benefits Liability, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 712 10 25 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 712 |
| FASB Accounting Standards Codification 712 10 25 5 | http://fasb.org/us-gaap/role/ref/legacyRef | 712 |
| FASB Accounting Standards Codification 942 210 S99 1 (SX 210.9-03.15) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |
| FASB Accounting Standards Codification 944 210 S99 1 (SX 210.7-03.15) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |