DERIVATIVE FINANCIAL INSTRUMENTS - MSR Hedging Activities (Details) - USD ($) $ in Millions |
Sep. 30, 2018 |
Dec. 31, 2017 |
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| Derivative Instruments and Hedging Activities Disclosures [Line Items] | ||
| Derivative, Notional Amount | $ 5,727 | $ 8,375 |
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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