Annual report pursuant to Section 13 and 15(d)

LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio, MSRs Fair Value Method (Details)

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LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio, MSRs Fair Value Method (Details) - Residential mortgage - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Servicing Asset at Fair Value, Amount [Roll Forward]    
Fair value, beginning of year $ 351 $ 210
Servicing assets obtained in acquisition 0 59
New servicing assets created 85 135
Time decay (22) (15)
Payoffs (34) (65)
Changes in valuation inputs or assumptions 114 27
Fair value, end of year $ 494 $ 351