| Standard label: | Other Ownership Interests, Name [Domain] |
| Name: | us-gaap:OtherOwnershipInterestsNameDomain |
| Documentation: | Description of the ownership interest, which details special or unusual rights. Does not include limited or general partners' ownership interests. |
| Object type: | cm:Member |
| Data type: | [Member] (nonnum:domainItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:OtherOwnershipInterestsNameDomain |
| Label | Role | Language |
| Other Ownership Interests, Name [Domain] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 272 10 45 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 272 |
| FASB Accounting Standards Codification 272 10 50 3 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 272 |