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Business Segments and Revenue from Contracts with Customers - Segment Results and Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | $ 31,208 | $ 29,241 | $ 27,114
Non-interest income (loss) | 7,904 | 7,546 | 7,136
Total net revenue (loss) | 39,112 | 36,787 | 34,250
Provision for credit losses | 11,716 | 10,426 | 5,847
Non-interest expense | 21,486 | 20,316 | 19,163
Income (loss) from continuing operations before income taxes | 5,910 | 6,045 | 9,240
Income tax provision (benefit) | 1,163 | 1,158 | 1,880
Income (loss) from continuing operations, net of tax | 4,747 | 4,887 | 7,360
Loans held for investment | 327,775 | 320,472 | 312,331
Deposits | 362,707 | 348,413 | 332,992
Uncollectible portion of billed finance charges and fees | 2,600 | 1,900 | 946
Operating segments | Credit Card |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | 22,088 | 19,729 | 16,584
Non-interest income (loss) | 6,076 | 5,940 | 5,771
Total net revenue (loss) | 28,164 | 25,669 | 22,355
Provision for credit losses | 10,272 | 8,651 | 4,265
Non-interest expense | 13,576 | 12,490 | 11,627
Income (loss) from continuing operations before income taxes | 4,316 | 4,528 | 6,463
Income tax provision (benefit) | 1,024 | 1,071 | 1,536
Income (loss) from continuing operations, net of tax | 3,292 | 3,457 | 4,927
Loans held for investment | 162,508 | 154,547 | 137,730
Deposits | 0 | 0 | 0
Operating segments | Consumer Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | 8,023 | 8,713 | 8,965
Non-interest income (loss) | 695 | 589 | 469
Total net revenue (loss) | 8,718 | 9,302 | 9,434
Provision for credit losses | 1,435 | 1,169 | 1,173
Non-interest expense | 5,372 | 5,178 | 5,312
Income (loss) from continuing operations before income taxes | 1,911 | 2,955 | 2,949
Income tax provision (benefit) | 451 | 697 | 699
Income (loss) from continuing operations, net of tax | 1,460 | 2,258 | 2,250
Loans held for investment | 78,092 | 75,437 | 79,925
Deposits | 318,329 | 296,171 | 270,592
Operating segments | Commercial Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | 2,391 | 2,518 | 2,461
Non-interest income (loss) | 1,210 | 1,002 | 1,129
Total net revenue (loss) | 3,601 | 3,520 | 3,590
Provision for credit losses | 8 | 605 | 415
Non-interest expense | 2,011 | 2,011 | 2,070
Income (loss) from continuing operations before income taxes | 1,582 | 904 | 1,105
Income tax provision (benefit) | 373 | 213 | 262
Income (loss) from continuing operations, net of tax | 1,209 | 691 | 843
Loans held for investment | 87,175 | 90,488 | 94,676
Deposits | 31,691 | 32,712 | 40,808
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | (1,294) | (1,719) | (896)
Non-interest income (loss) | (77) | 15 | (233)
Total net revenue (loss) | (1,371) | (1,704) | (1,129)
Provision for credit losses | 1 | 1 | (6)
Non-interest expense | 527 | 637 | 154
Income (loss) from continuing operations before income taxes | (1,899) | (2,342) | (1,277)
Income tax provision (benefit) | (685) | (823) | (617)
Income (loss) from continuing operations, net of tax | (1,214) | (1,519) | (660)
Loans held for investment | 0 | 0 | 0
Deposits | $ 12,687 | $ 19,530 | $ 21,592

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