| Standard label: | Effect on Future Cash Flows, Amount |
| Name: | us-gaap:EffectOnFutureCashFlowsAmount |
| Documentation: | The quantified amount of the future effect on cash flows. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:EffectOnFutureCashFlowsAmount |
| Label | Role | Language |
| Effect on Future Cash Flows, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 420 10 S99 2 (SAB TOPIC 5.P.4) | http://fasb.org/us-gaap/role/ref/legacyRef | 420 |