v3.25.2
Goodwill, Mortgage Servicing Rights, and Other Intangible Assets - Mortgage Servicing Rights (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mortgage Servicing Rights [Roll Forward]        
Fair value at beginning of period $ 9,127 $ 8,605 $ 9,121 $ 8,522
MSR activity:        
Originations of MSRs 84 95 195 153
Purchase of MSRs 1 323 280 325
Disposition of MSRs 3 (32) 7 (27)
Net additions/(dispositions) 88 386 482 451
Changes due to collection/realization of expected cash flows (272) (263) (533) (523)
Changes in valuation due to inputs and assumptions:        
Changes due to market interest rates and other 59 117 (41) 385
Changes in valuation due to other inputs and assumptions:        
Projected cash flows (e.g., cost to service) 0 0 1 7
Discount rates (1) 0 (1) 0
Prepayment model changes and other (5) 2 (33) 5
Total changes in valuation due to other inputs and assumptions (6) 2 (33) 12
Total changes in valuation due to inputs and assumptions 53 119 (74) 397
Fair value at end of period 8,996 8,847 8,996 8,847
Changes in unrealized gains/(losses) included in income related to MSRs 53 119 (74) 397
Contractual service fees, late fees and other ancillary fees included in income 412 395 814 794
Third-party mortgage loans serviced 658,000 644,000 658,000 644,000
Servicer advances, net of an allowance for uncollectible amounts $ 440 $ 524 $ 440 $ 524