| Standard label: | Service Concession Arrangement, Retrospective Application, All Contracts [true false] |
| Name: | us-gaap:ServiceConcessionArrangementRetrospectiveApplicationAllContracts |
| Documentation: | Indicates (true false) whether entity retrospectively applied new guidance for service concession arrangement to all contracts at date of initial application. |
| Object type: | cm:Concept |
| Data type: | Yes/No (xbrli:booleanItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ServiceConcessionArrangementRetrospectiveApplicationAllContracts |
| Label | Role | Language |
| Service Concession Arrangement, Retrospective Application, All Contracts [true false] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 853 10 65 2 (g) | http://www.xbrl.org/2003/role/disclosureRef | 853 |