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Business Segments and Revenue from Contracts with Customers - Segment Results and Reconciliation (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | $ 12,404 | $ 8,076 | $ 30,412 | $ 23,110 |
Non-interest income (loss) | 2,955 | 1,938 | 7,439 | 5,812 |
Total net revenue (loss) | 15,359 | 10,014 | 37,851 | 28,922 |
Provision for credit losses | 2,714 | 2,482 | 16,513 | 9,074 |
Non-interest expense | 8,263 | 5,314 | 21,156 | 15,397 |
Income (loss) from continuing operations before income taxes | 4,382 | 2,218 | 182 | 4,451 |
Income tax provision (benefit) | 1,189 | 441 | (152) | 797 |
Income (loss) from continuing operations, net of tax | 3,193 | 1,777 | 334 | 3,654 |
Loans held for investment | 443,159 | 320,243 | 443,159 | 320,243 |
Deposits | 468,785 | 353,631 | 468,785 | 353,631 | $ 362,707
Uncollectible portion of billed finance charges and fees | 869 | 624 | 2,400 | 1,900 |
Operating segments | Credit Card |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 9,396 | 5,743 | 22,343 | 16,309 |
Non-interest income (loss) | 2,211 | 1,509 | 5,524 | 4,491 |
Total net revenue (loss) | 11,607 | 7,252 | 27,867 | 20,800 |
Provision for credit losses | 2,364 | 2,084 | 15,388 | 7,888 |
Non-interest expense | 5,409 | 3,367 | 13,494 | 9,730 |
Income (loss) from continuing operations before income taxes | 3,834 | 1,801 | (1,015) | 3,182 |
Income tax provision (benefit) | 914 | 427 | (237) | 756 |
Income (loss) from continuing operations, net of tax | 2,920 | 1,374 | (778) | 2,426 |
Loans held for investment | 271,037 | 156,651 | 271,037 | 156,651 |
Deposits | 0 | 0 | 0 | 0 |
Operating segments | Consumer Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 2,357 | 2,028 | 6,462 | 6,064 |
Non-interest income (loss) | 475 | 182 | 1,052 | 513 |
Total net revenue (loss) | 2,832 | 2,210 | 7,514 | 6,577 |
Provision for credit losses | 340 | 351 | 893 | 1,107 |
Non-interest expense | 1,941 | 1,331 | 5,235 | 3,827 |
Income (loss) from continuing operations before income taxes | 551 | 528 | 1,386 | 1,643 |
Income tax provision (benefit) | 131 | 125 | 330 | 388 |
Income (loss) from continuing operations, net of tax | 420 | 403 | 1,056 | 1,255 |
Loans held for investment | 83,230 | 76,758 | 83,230 | 76,758 |
Deposits | 416,765 | 309,569 | 416,765 | 309,569 |
Operating segments | Commercial Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 586 | 596 | 1,760 | 1,804 |
Non-interest income (loss) | 318 | 292 | 965 | 844 |
Total net revenue (loss) | 904 | 888 | 2,725 | 2,648 |
Provision for credit losses | 9 | 48 | 232 | 80 |
Non-interest expense | 520 | 495 | 1,495 | 1,493 |
Income (loss) from continuing operations before income taxes | 375 | 345 | 998 | 1,075 |
Income tax provision (benefit) | 89 | 82 | 237 | 254 |
Income (loss) from continuing operations, net of tax | 286 | 263 | 761 | 821 |
Loans held for investment | 88,892 | 86,834 | 88,892 | 86,834 |
Deposits | 29,920 | 30,598 | 29,920 | 30,598 |
Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 65 | (291) | (153) | (1,067) |
Non-interest income (loss) | (49) | (45) | (102) | (36) |
Total net revenue (loss) | 16 | (336) | (255) | (1,103) |
Provision for credit losses | 1 | (1) | 0 | (1) |
Non-interest expense | 393 | 121 | 932 | 347 |
Income (loss) from continuing operations before income taxes | (378) | (456) | (1,187) | (1,449) |
Income tax provision (benefit) | 55 | (193) | (482) | (601) |
Income (loss) from continuing operations, net of tax | (433) | (263) | (705) | (848) |
Loans held for investment | 0 | 0 | 0 | 0 |
Deposits | $ 22,100 | $ 13,464 | $ 22,100 | $ 13,464 |

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