| Standard label: | Postconfirmation, Preferred and Common Stock Held in Treasury |
| Name: | us-gaap:PostconfirmationPreferredAndCommonStockHeldInTreasury |
| Documentation: | Amount of preferred and common stock held in treasury at the balance sheet date after fresh-start adjustments. |
| 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:PostconfirmationPreferredAndCommonStockHeldInTreasury |
| Label | Role | Language |
| Postconfirmation, Preferred and Common Stock Held in Treasury | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 852 10 55 10 | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |