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Business Segment Information - Amounts of Consolidated Revenue, Expense, Tax and Assets by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |
Interest income | $ 1,077 |  |  | $ 1,119 |  |  | $ 3,135 | $ 3,284
Interest expense | 403 |  |  | 492 |  |  | 1,189 | 1,403
Funds transfer pricing | 0 |  |  | 0 |  |  | 0 | 0
Net interest income (expense) | 674 |  |  | 627 |  |  | 1,946 | 1,881
Noninterest income | 215 |  |  | 200 |  |  | 585 | 581
Total revenues | 889 |  |  | 827 |  |  | 2,531 | 2,462
Noninterest expense | 550 |  |  | 511 |  |  | 1,529 | 1,527
Pre-provision net revenue | 339 |  |  | 316 |  |  | 1,002 | 935
Provision for credit losses | (5) |  |  | 35 |  |  | 65 | 140
Income (loss) before income taxes | 344 |  |  | 281 |  |  | 937 | 795
Income tax expense (benefit) | 78 |  |  | 58 |  |  | 205 | 171
Net income (loss) | 266 | $ 245 | $ 222 | 223 | $ 204 | $ 197 | 732 | 624
Average assets | 82,049 |  |  | 82,366 |  |  | 81,661 | 81,779
Depreciation and amortization | 6 |  |  | 31 |  |  | 47 | 82
Expenditures for long-lived assets | 6 |  |  | 7 |  |  | 23 | 28
Commercial, Consumer & Wealth |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |
Interest income | 855 |  |  | 905 |  |  | 2,494 | 2,681
Interest expense | 300 |  |  | 372 |  |  | 886 | 1,075
Funds transfer pricing | 105 |  |  | 101 |  |  | 308 | 291
Net interest income (expense) | 660 |  |  | 634 |  |  | 1,916 | 1,897
Noninterest income | 117 |  |  | 119 |  |  | 340 | 345
Total revenues | 777 |  |  | 753 |  |  | 2,256 | 2,242
Noninterest expense | 365 |  |  | 352 |  |  | 1,063 | 1,056
Pre-provision net revenue | 412 |  |  | 401 |  |  | 1,193 | 1,186
Provision for credit losses | 2 |  |  | 42 |  |  | 52 | 143
Income (loss) before income taxes | 410 |  |  | 359 |  |  | 1,141 | 1,043
Income tax expense (benefit) | 98 |  |  | 85 |  |  | 271 | 246
Net income (loss) | 312 |  |  | 274 |  |  | 870 | 797
Average assets | 58,827 |  |  | 59,503 |  |  | 58,760 | 59,503
Depreciation and amortization | (5) |  |  | 15 |  |  | 12 | 33
Expenditures for long-lived assets | 5 |  |  | 4 |  |  | 15 | 15
Wholesale |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |
Interest income | 142 |  |  | 141 |  |  | 406 | 386
Interest expense | 27 |  |  | 31 |  |  | 81 | 96
Funds transfer pricing | (55) |  |  | (58) |  |  | (157) | (151)
Net interest income (expense) | 60 |  |  | 52 |  |  | 168 | 139
Noninterest income | 73 |  |  | 56 |  |  | 187 | 172
Total revenues | 133 |  |  | 108 |  |  | 355 | 311
Noninterest expense | 83 |  |  | 75 |  |  | 235 | 223
Pre-provision net revenue | 50 |  |  | 33 |  |  | 120 | 88
Provision for credit losses | (1) |  |  | (7) |  |  | 9 | 1
Income (loss) before income taxes | 51 |  |  | 40 |  |  | 111 | 87
Income tax expense (benefit) | 12 |  |  | 10 |  |  | 27 | 21
Net income (loss) | 39 |  |  | 30 |  |  | 84 | 66
Average assets | 9,356 |  |  | 8,440 |  |  | 9,056 | 7,871
Depreciation and amortization | 2 |  |  | 2 |  |  | 6 | 6
Expenditures for long-lived assets | 0 |  |  | 0 |  |  | 1 | 1
Corporate |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |
Interest income | 80 |  |  | 73 |  |  | 235 | 217
Interest expense | 76 |  |  | 89 |  |  | 222 | 232
Funds transfer pricing | (50) |  |  | (43) |  |  | (151) | (140)
Net interest income (expense) | (46) |  |  | (59) |  |  | (138) | (155)
Noninterest income | 25 |  |  | 25 |  |  | 58 | 64
Total revenues | (21) |  |  | (34) |  |  | (80) | (91)
Noninterest expense | 102 |  |  | 84 |  |  | 231 | 248
Pre-provision net revenue | (123) |  |  | (118) |  |  | (311) | (339)
Provision for credit losses | (6) |  |  | 0 |  |  | 4 | (4)
Income (loss) before income taxes | (117) |  |  | (118) |  |  | (315) | (335)
Income tax expense (benefit) | (32) |  |  | (37) |  |  | (93) | (96)
Net income (loss) | (85) |  |  | (81) |  |  | (222) | (239)
Average assets | 13,866 |  |  | 14,423 |  |  | 13,845 | 14,405
Depreciation and amortization | 9 |  |  | 14 |  |  | 29 | 43
Expenditures for long-lived assets | 1 |  |  | 3 |  |  | 7 | 12
Deferred compensation expense credit |  |  |  |  |  |  | 4 |
Special assessment fee expense (credit) | (2) |  |  | (2) |  |  | (2) | 10
Restructuring costs |  |  |  | 2 |  |  |  | 10
Corporate | Visa Class B Shares |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |
Derivative valuation adjustment prior sales of Visa Class B shares | $ 10 |  |  | $ 15 |  |  | $ 15 | $ 15

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