| Standard label: | Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment in Leveraged Leases, Net |
| Name: | us-gaap:LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNet |
| Documentation: | The net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes. |
| 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:LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNet |
| Label | Role | Language |
| Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment in Leveraged Leases, Net | http://www.xbrl.org/2003/role/label | en-US |
| Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment in Leveraged Leases, Net, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 840 30 30 14 | http://fasb.org/us-gaap/role/ref/legacyRef | 840 |
| FASB Accounting Standards Codification 842 50 50 1 | http://www.xbrl.org/2003/role/disclosureRef | 842 |
| Part Of Roll Up: |
| us-gaap:AssetsNoncurrent |