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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, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | $ 8,076 | $ 7,423 | $ 23,110 | $ 21,722 |
Non-interest income (loss) | 1,938 | 1,943 | 5,812 | 5,559 |
Total net revenue (loss) | 10,014 | 9,366 | 28,922 | 27,281 |
Provision for credit losses | 2,482 | 2,284 | 9,074 | 7,569 |
Non-interest expense | 5,314 | 4,860 | 15,397 | 14,599 |
Income (loss) from continuing operations before income taxes | 2,218 | 2,222 | 4,451 | 5,113 |
Income tax provision (benefit) | 441 | 432 | 797 | 932 |
Income (loss) from continuing operations, net of tax | 1,777 | 1,790 | 3,654 | 4,181 |
Loans held for investment | 320,243 | 314,780 | 320,243 | 314,780 |
Deposits | 353,631 | 346,011 | 353,631 | 346,011 | $ 348,413
Uncollectible portion of billed finance charges and fees | 624 | 449 | 1,900 | 1,300 |
Operating segments | Credit Card |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 5,743 | 5,114 | 16,309 | 14,498 |
Non-interest income (loss) | 1,509 | 1,513 | 4,491 | 4,375 |
Total net revenue (loss) | 7,252 | 6,627 | 20,800 | 18,873 |
Provision for credit losses | 2,084 | 1,953 | 7,888 | 6,298 |
Non-interest expense | 3,367 | 3,015 | 9,730 | 9,073 |
Income (loss) from continuing operations before income taxes | 1,801 | 1,659 | 3,182 | 3,502 |
Income tax provision (benefit) | 427 | 393 | 756 | 830 |
Income (loss) from continuing operations, net of tax | 1,374 | 1,266 | 2,426 | 2,672 |
Loans held for investment | 156,651 | 146,783 | 156,651 | 146,783 |
Deposits | 0 | 0 | 0 | 0 |
Operating segments | Consumer Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 2,028 | 2,133 | 6,064 | 6,762 |
Non-interest income (loss) | 182 | 142 | 513 | 426 |
Total net revenue (loss) | 2,210 | 2,275 | 6,577 | 7,188 |
Provision for credit losses | 351 | 213 | 1,107 | 747 |
Non-interest expense | 1,331 | 1,262 | 3,827 | 3,776 |
Income (loss) from continuing operations before income taxes | 528 | 800 | 1,643 | 2,665 |
Income tax provision (benefit) | 125 | 189 | 388 | 629 |
Income (loss) from continuing operations, net of tax | 403 | 611 | 1,255 | 2,036 |
Loans held for investment | 76,758 | 76,844 | 76,758 | 76,844 |
Deposits | 309,569 | 290,789 | 309,569 | 290,789 |
Operating segments | Commercial Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 596 | 621 | 1,804 | 1,901 |
Non-interest income (loss) | 292 | 288 | 844 | 757 |
Total net revenue (loss) | 888 | 909 | 2,648 | 2,658 |
Provision for credit losses | 48 | 116 | 80 | 521 |
Non-interest expense | 495 | 512 | 1,493 | 1,524 |
Income (loss) from continuing operations before income taxes | 345 | 281 | 1,075 | 613 |
Income tax provision (benefit) | 82 | 67 | 254 | 145 |
Income (loss) from continuing operations, net of tax | 263 | 214 | 821 | 468 |
Loans held for investment | 86,834 | 91,153 | 86,834 | 91,153 |
Deposits | 30,598 | 36,035 | 30,598 | 36,035 |
Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | (291) | (445) | (1,067) | (1,439) |
Non-interest income (loss) | (45) | 0 | (36) | 1 |
Total net revenue (loss) | (336) | (445) | (1,103) | (1,438) |
Provision for credit losses | (1) | 2 | (1) | 3 |
Non-interest expense | 121 | 71 | 347 | 226 |
Income (loss) from continuing operations before income taxes | (456) | (518) | (1,449) | (1,667) |
Income tax provision (benefit) | (193) | (217) | (601) | (672) |
Income (loss) from continuing operations, net of tax | (263) | (301) | (848) | (995) |
Loans held for investment | 0 | 0 | 0 | 0 |
Deposits | $ 13,464 | $ 19,187 | $ 13,464 | $ 19,187 |

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