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Business Segments and Revenue from Contracts with Customers - Segment Results and Reconciliation (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | $ 5,822 | $ 6,025 |
Non-interest income (loss) | 1,291 | 1,224 |
Total net revenue (loss) | 7,113 | 7,249 |
Provision (benefit) for credit losses | (823) | 5,423 |
Non-interest expense | 3,740 | 3,729 |
Income (loss) from continuing operations before income taxes | 4,196 | (1,903) |
Income tax provision | 869 | (563) |
Income (loss) from continuing operations, net of tax | 3,327 | (1,340) |
Income (loss) from continuing operations before income taxes | 243,131 | 262,990 | $ 251,624
Total Deposits | 310,328 | 269,689 | $ 305,442
Uncollectible portion of billed finance charges and fees | 180 | 389 |
Operating segments | Credit Card |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | 3,372 | 3,702 |
Non-interest income (loss) | 1,029 | 911 |
Total net revenue (loss) | 4,401 | 4,613 |
Provision (benefit) for credit losses | (492) | 3,702 |
Non-interest expense | 2,135 | 2,208 |
Income (loss) from continuing operations before income taxes | 2,758 | (1,297) |
Income tax provision | 653 | (306) |
Income (loss) from continuing operations, net of tax | 2,105 | (991) |
Income (loss) from continuing operations before income taxes | 99,127 | 117,797 |
Total Deposits | 0 | 0 |
Operating segments | Consumer Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | 2,030 | 1,657 |
Non-interest income (loss) | 141 | 126 |
Total net revenue (loss) | 2,171 | 1,783 |
Provision (benefit) for credit losses | (126) | 860 |
Non-interest expense | 1,117 | 991 |
Income (loss) from continuing operations before income taxes | 1,180 | (68) |
Income tax provision | 278 | (16) |
Income (loss) from continuing operations, net of tax | 902 | (52) |
Income (loss) from continuing operations before income taxes | 70,202 | 64,033 |
Total Deposits | 254,001 | 217,607 |
Operating segments | Commercial Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | 520 | 491 |
Non-interest income (loss) | 240 | 238 |
Total net revenue (loss) | 760 | 729 |
Provision (benefit) for credit losses | (203) | 856 |
Non-interest expense | 419 | 412 |
Income (loss) from continuing operations before income taxes | 544 | (539) |
Income tax provision | 128 | (128) |
Income (loss) from continuing operations, net of tax | 416 | (411) |
Income (loss) from continuing operations before income taxes | 73,802 | 81,160 |
Total Deposits | 41,552 | 32,822 |
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income (loss) | (100) | 175 |
Non-interest income (loss) | (119) | (51) |
Total net revenue (loss) | (219) | 124 |
Provision (benefit) for credit losses | (2) | 5 |
Non-interest expense | 69 | 118 |
Income (loss) from continuing operations before income taxes | (286) | 1 |
Income tax provision | (190) | (113) |
Income (loss) from continuing operations, net of tax | (96) | 114 |
Income (loss) from continuing operations before income taxes | 0 | 0 |
Total Deposits | $ 14,775 | $ 19,260 |

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