| Standard label: | Letters of Credit Outstanding, Amount |
| Name: | us-gaap:LettersOfCreditOutstandingAmount |
| Documentation: | The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. |
| 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:LettersOfCreditOutstandingAmount |
| Label | Role | Language |
| Letters of Credit Outstanding, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |