Annual report pursuant to Section 13 and 15(d)

MORTGAGE LOAN SALES AND SERVICING RIGHTS - Residential Mortgage Portfolio, MSRs Fair Value Method (Details)

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MORTGAGE LOAN SALES AND SERVICING RIGHTS - Residential Mortgage Portfolio, MSRs Fair Value Method (Details) - Residential mortgage - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Servicing Asset at Fair Value, Amount [Roll Forward]    
Fair value, beginning of year $ 494 $ 351
New servicing assets created 63 85
Servicing assets sold (1) 0
Time decay (24) (22)
Payoffs (24) (34)
Changes in valuation inputs or assumptions 7 114
Fair value, end of year $ 515 $ 494