| Standard label: | Leveraged Lease Investment |
| Name: | us-gaap:LeveragedLeaseInvestment |
| Documentation: | Carrying amount as of the balance sheet date of leveraged lease investments which represent the aggregate amount of the estimated residual value of the lease assets and lease payments receivables, net of unearned and deferred income to be allocated over the lease term and non-recourse debt. |
| 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:LeveragedLeaseInvestment |
| Label | Role | Language |
| Leveraged Lease Investment | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(17)) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 840 30 50 5 | http://fasb.org/us-gaap/role/ref/legacyRef | 840 |
| FASB Accounting Standards Codification 840 30 25 8 | http://fasb.org/us-gaap/role/ref/legacyRef | 840 |
| FASB Accounting Standards Codification 942 210 S99 1 (SX 210.9-03(10)) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |
| FASB Accounting Standards Codification 944 210 S99 1 (SX 210.7-03(a)(10)) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| Part Of Roll Up: |
| us-gaap:LongTermInvestments |