Quarterly report pursuant to Section 13 or 15(d)

MORTGAGE LOAN SALES AND SERVICING RIGHTS - Residential Mortgage Portfolio (Details)

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MORTGAGE LOAN SALES AND SERVICING RIGHTS - Residential Mortgage Portfolio (Details) - Commercial Loan [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Servicing Asset at Amortized Cost [Line Items]        
Loans sold with servicing retained $ 2,391 $ 1,238 $ 6,106 $ 3,025
Pretax gains resulting from above loan sales $ 98 $ 26 $ 196 $ 61