| Standard label: | Postconfirmation, Liabilities Subject to Compromise |
| Name: | us-gaap:PostconfirmationLiabilitiesSubjectToCompromise |
| Documentation: | Amount of liabilities subject to compromise 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: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PostconfirmationLiabilitiesSubjectToCompromise |
| Label | Role | Language |
| Postconfirmation, Liabilities Subject to Compromise | http://www.xbrl.org/2003/role/label | en-US |
| Postconfirmation, Liabilities Subject to Compromise, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 852 10 45 7 | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |
| FASB Accounting Standards Codification 852 10 50 7 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |
| FASB Accounting Standards Codification 852 10 55 10 | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |