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v3.19.1

Other Income (Tables) | 3 Months Ended
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Mar. 31, 2019
Other Income and Expenses [Abstract] |
Schedule Of Other Income [Table Text Block] | Other income consists of the following:
| For the Three Months Ended March 31,
(In millions) | 2019 |  | 2018
Ancillary product profit sharing | $ | 10.4 |  |  | $ | 6.4 |
Remarketing fees | 3.4 |  |  | 3.1 |
Interest | 2.3 |  |  | 0.7 |
GPS-SID fees | 1.4 |  |  | 2.5 |
Dealer enrollment fees | 1.0 |  |  | 1.1 |
Dealer support products and services | 0.7 |  |  | 1.2 |
Other | 0.5 |  |  | — |
Total | $ | 19.7 |  |  | $ | 15.0 |
Disaggregation of Revenue [Table Text Block] | The following table disaggregates our other income by major source of income and timing of the revenue recognition:
(In millions) | For the Three Months Ended March 31, 2019
| Ancillary product profit sharing |  | Remarketing fees |  | Interest |  | GPS-SID fees |  | Dealer enrollment fees |  | Dealer support products and services |  | Other |  | Total Other Income
Source of income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Third Party Providers | $ | 10.4 |  |  | $ | — |  |  | $ | 2.3 |  |  | $ | 1.4 |  |  | $ | — |  |  | $ | — |  |  | $ | 0.5 |  |  | $ | 14.6 |
Dealers | — |  |  | 3.4 |  |  | — |  |  | — |  |  | 1.0 |  |  | 0.7 |  |  | — |  |  | 5.1 |
Total | $ | 10.4 |  |  | $ | 3.4 |  |  | $ | 2.3 |  |  | $ | 1.4 |  |  | $ | 1.0 |  |  | $ | 0.7 |  |  | $ | 0.5 |  |  | $ | 19.7 |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Over time | $ | 10.4 |  |  | $ | — |  |  | $ | 2.3 |  |  | $ | — |  |  | $ | 1.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 13.7 |
At a point in time | — |  |  | 3.4 |  |  | — |  |  | 1.4 |  |  | — |  |  | 0.7 |  |  | 0.5 |  |  | 6.0 |
Total | $ | 10.4 |  |  | $ | 3.4 |  |  | $ | 2.3 |  |  | $ | 1.4 |  |  | $ | 1.0 |  |  | $ | 0.7 |  |  | $ | 0.5 |  |  | $ | 19.7 |

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- Definition Schedule Of Other Income [Table Text Block] + References No definition available. + Details
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Namespace Prefix: | cacc_
Data Type: | nonnum:textBlockItemType
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration