Quarterly report pursuant to Section 13 or 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
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Servicing Asset at Fair Value, Amount [Roll Forward]        
Fair value, beginning of period $ 543 $ 505 $ 515 $ 494
New servicing assets created 12 17 33 48
Time decay (6) (6) (19) (18)
Payoffs (9) (7) (21) (18)
Changes in valuation inputs or assumptions (25) 38 7 41
Fair value, end of period 515 547 515 547
Loans serviced for third parties, unpaid principal balance, end of period $ 33,565 $ 32,965 $ 33,565 $ 32,965