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
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Servicing Asset at Fair Value, Amount [Roll Forward]      
Fair value, beginning of period $ 515 $ 494  
New servicing assets created 10 13  
Time decay (6) (6)  
Payoffs (5) (4)  
Changes in valuation inputs or assumptions 20 (12)  
Fair value, end of period 534 $ 485 $ 515
Loans serviced for third parties, unpaid principal balance $ 33,303   $ 33,237