| Standard label: | Preconfirmation, Buildings and Improvements |
| Name: | us-gaap:PreconfirmationBuildingsAndImprovements |
| Documentation: | Amount of buildings and improvements at the balance sheet date before 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:PreconfirmationBuildingsAndImprovements |
| Label | Role | Language |
| Preconfirmation, Buildings and Improvements | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| 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 |