| Standard label: | Deferred Costs, Credit Card Origination Costs, Amortization |
| Name: | us-gaap:DeferredCostsCreditCardOriginationCostsAmortization |
| Documentation: | Amount of amortization of capitalized credit card origination costs not related to private label credit cards. |
| 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:DeferredCostsCreditCardOriginationCostsAmortization |
| Label | Role | Language |
| Deferred Costs, Credit Card Origination Costs, Amortization | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 310 20 50 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |
| FASB Accounting Standards Codification 310 20 35 7 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |