| Standard label: | Liabilities Subject to Compromise, Income Tax Contingencies |
| Name: | us-gaap:LiabilitiesSubjectToCompromiseIncomeTaxContingencies |
| Documentation: | The amount of income taxes included in liabilities subject to compromise. |
| 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:LiabilitiesSubjectToCompromiseIncomeTaxContingencies |
| Label | Role | Language |
| Liabilities Subject to Compromise, Income Tax Contingencies | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 852 10 50 2 b | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |
| FASB Accounting Standards Codification 852 10 55 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |
| FASB Accounting Standards Codification 852 10 45 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 852 |