DERIVATIVE FINANCIAL INSTRUMENTS - Mortgage Banking Activities (Details) - USD ($) $ in Millions |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Derivative assets: | ||
| Derivative assets gross | $ 322 | $ 420 |
| Derivative liabilities: | ||
| Total derivative liabilities | (331) | (371) |
| Interest rate lock agreements | ||
| Derivative assets: | ||
| Derivative assets gross | 6 | 6 |
| Derivative liabilities: | ||
| Total derivative liabilities | 0 | 2 |
| Forward trades and options | ||
| Derivative assets: | ||
| Derivative assets gross | 1 | 13 |
| Derivative liabilities: | ||
| Total derivative liabilities | 0 | 1 |
| Derivative used in Mortgage Banking Activities | ||
| Derivative assets: | ||
| Derivative assets gross | 7 | 19 |
| Derivative liabilities: | ||
| Total derivative liabilities | $ 0 | $ 3 |
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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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