| Standard label: | Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Income |
| Name: | us-gaap:LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureDeferredIncome |
| Documentation: | The estimated portion of pretax income and investment tax credit remaining to be allocated to income over the lease term. |
| 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:LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureDeferredIncome |
| Label | Role | Language |
| Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Income | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 840 30 30 14 (d) | 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 |