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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, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | $ 7,003 | $ 6,156 | $ 19,917 | $ 17,721 |
Non-interest income (loss) | 1,802 | 1,674 | 5,293 | 4,596 |
Total net revenue (loss) | 8,805 | 7,830 | 25,210 | 22,317 |
Provision (benefit) for credit losses | 1,669 | (342) | 3,431 | (2,325) |
Non-interest expense | 4,949 | 4,186 | 14,083 | 11,892 |
Income (loss) from continuing operations before income taxes | 2,187 | 3,986 | 7,696 | 12,750 |
Income tax provision (benefit) | 493 | 882 | 1,568 | 2,782 |
Income (loss) from continuing operations, net of tax | 1,694 | 3,104 | 6,128 | 9,968 |
Total loans held for investment | 303,943 | 261,390 | 303,943 | 261,390 | $ 277,340
Total Deposits | 317,193 | 305,938 | 317,193 | 305,938 | $ 310,980
Uncollectible portion of billed finance charges and fees | 222 | 123 | 625 | 478 |
Operating segments | Credit Card |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 4,313 | 3,620 | 12,051 | 10,209 |
Non-interest income (loss) | 1,454 | 1,263 | 4,322 | 3,545 |
Total net revenue (loss) | 5,767 | 4,883 | 16,373 | 13,754 |
Provision (benefit) for credit losses | 1,261 | (198) | 2,387 | (1,325) |
Non-interest expense | 3,004 | 2,424 | 8,558 | 6,822 |
Income (loss) from continuing operations before income taxes | 1,502 | 2,657 | 5,428 | 8,257 |
Income tax provision (benefit) | 356 | 627 | 1,291 | 1,952 |
Income (loss) from continuing operations, net of tax | 1,146 | 2,030 | 4,137 | 6,305 |
Total loans held for investment | 126,913 | 105,030 | 126,913 | 105,030 |
Total Deposits | 0 | 0 | 0 | 0 |
Operating segments | Consumer Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 2,311 | 2,159 | 6,571 | 6,290 |
Non-interest income (loss) | 129 | 127 | 330 | 412 |
Total net revenue (loss) | 2,440 | 2,286 | 6,901 | 6,702 |
Provision (benefit) for credit losses | 285 | (91) | 696 | (523) |
Non-interest expense | 1,340 | 1,186 | 3,862 | 3,426 |
Income (loss) from continuing operations before income taxes | 815 | 1,191 | 2,343 | 3,799 |
Income tax provision (benefit) | 193 | 282 | 555 | 897 |
Income (loss) from continuing operations, net of tax | 622 | 909 | 1,788 | 2,902 |
Total loans held for investment | 81,199 | 77,112 | 81,199 | 77,112 |
Total Deposits | 256,661 | 252,387 | 256,661 | 252,387 |
Operating segments | Commercial Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 699 | 578 | 1,941 | 1,558 |
Non-interest income (loss) | 319 | 306 | 868 | 803 |
Total net revenue (loss) | 1,018 | 884 | 2,809 | 2,361 |
Provision (benefit) for credit losses | 123 | (53) | 353 | (475) |
Non-interest expense | 542 | 459 | 1,515 | 1,295 |
Income (loss) from continuing operations before income taxes | 353 | 478 | 941 | 1,541 |
Income tax provision (benefit) | 83 | 113 | 223 | 364 |
Income (loss) from continuing operations, net of tax | 270 | 365 | 718 | 1,177 |
Total loans held for investment | 95,831 | 79,248 | 95,831 | 79,248 |
Total Deposits | 41,058 | 43,347 | 41,058 | 43,347 |
Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | (320) | (201) | (646) | (336) |
Non-interest income (loss) | (100) | (22) | (227) | (164) |
Total net revenue (loss) | (420) | (223) | (873) | (500) |
Provision (benefit) for credit losses | 0 | 0 | (5) | (2) |
Non-interest expense | 63 | 117 | 148 | 349 |
Income (loss) from continuing operations before income taxes | (483) | (340) | (1,016) | (847) |
Income tax provision (benefit) | (139) | (140) | (501) | (431) |
Income (loss) from continuing operations, net of tax | (344) | (200) | (515) | (416) |
Total loans held for investment | 0 | 0 | 0 | 0 |
Total Deposits | $ 19,474 | $ 10,204 | $ 19,474 | $ 10,204 |

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