Quarterly report pursuant to Section 13 or 15(d)

LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio (Details)

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LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio (Details) - Residential Mortgage - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Servicing Asset at Amortized Cost [Line Items]    
Loans sold with servicing retained $ 1 $ 1
Pretax gains resulting from above loan sales $ 0 $ 0