| Standard label: | Corporate and Other [Member] |
| Name: | us-gaap:CorporateAndOtherMember |
| Documentation: | Component of an entity that provides financial and operational oversight and administrative support for other segments and other segments not separately reported due to size or nature of business activities. Excludes intersegment elimination and reconciling items. |
| 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:CorporateAndOtherMember |
| Label | Role | Language |
| Corporate and Other [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 280 10 50 15 | http://fasb.org/us-gaap/role/ref/legacyRef | 280 |