LOAN SALES AND SECURITIZATIONS - Automobile Loans, MSRs Amortization Method (Details) - USD ($) $ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
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| Servicing Asset at Amortized Cost, Balance [Roll Forward] | ||
| Fair value, end of period | $ 251 | $ 238 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Fair value of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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