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Business Segments and Revenue from Contracts with Customers - Segment Results and Reconciliation (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | $ 5,460 | $ 5,746 | $ 11,485 | $ 11,537 |
Non-interest income (loss) | 1,096 | 1,378 | 2,320 | 2,670 |
Total net revenue (loss) | 6,556 | 7,124 | 13,805 | 14,207 |
Provision (benefit) for credit losses |  | 1,342 |  | 3,035 |
Non-interest expense | 3,770 | 3,779 | 7,499 | 7,450 |
Income (loss) from continuing operations before income taxes | (1,460) | 2,003 | (3,363) | 3,722 |
Income tax provision (benefit) | (543) | 387 | (1,106) | 696 |
Income (loss) from continuing operations, net of tax | (917) | 1,616 | (2,257) | 3,026 |
Loans held for investment |  | 244,460 |  | 244,460 |
Total Deposits | 304,238 | 254,535 | 304,238 | 254,535 | $ 262,697
Uncollectible Portion of Billed Finance Charges and Fees | 318 |  | 707 |  |
Operating segments | Credit Card |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 3,369 | 3,531 | 7,071 | 7,121 |
Non-interest income (loss) | 845 | 1,038 | 1,756 | 1,988 |
Total net revenue (loss) | 4,214 | 4,569 | 8,827 | 9,109 |
Provision (benefit) for credit losses | 2,944 | 1,095 | 6,646 | 2,484 |
Non-interest expense | 1,969 | 2,253 | 4,177 | 4,424 |
Income (loss) from continuing operations before income taxes | (699) | 1,221 | (1,996) | 2,201 |
Income tax provision (benefit) | (166) | 283 | (472) | 512 |
Income (loss) from continuing operations, net of tax | (533) | 938 | (1,524) | 1,689 |
Loans held for investment | 107,310 | 112,141 | 107,310 | 112,141 |
Total Deposits | 0 | 0 | 0 | 0 |
Operating segments | Consumer Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 1,665 | 1,709 | 3,322 | 3,388 |
Non-interest income (loss) | 97 | 166 | 223 | 326 |
Total net revenue (loss) | 1,762 | 1,875 | 3,545 | 3,714 |
Provision (benefit) for credit losses | 876 | 165 | 1,736 | 400 |
Non-interest expense | 1,036 | 1,002 | 2,027 | 1,996 |
Income (loss) from continuing operations before income taxes | (150) | 708 | (218) | 1,318 |
Income tax provision (benefit) | (36) | 165 | (52) | 307 |
Income (loss) from continuing operations, net of tax | (114) | 543 | (166) | 1,011 |
Loans held for investment | 66,712 | 60,327 | 66,712 | 60,327 |
Total Deposits | 246,804 | 205,220 | 246,804 | 205,220 |
Operating segments | Commercial Banking |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | 518 | 514 | 1,009 | 1,003 |
Non-interest income (loss) | 180 | 200 | 418 | 387 |
Total net revenue (loss) | 698 | 714 | 1,427 | 1,390 |
Provision (benefit) for credit losses | 427 | 82 | 1,283 | 151 |
Non-interest expense | 425 | 427 | 837 | 844 |
Income (loss) from continuing operations before income taxes | (154) | 205 | (693) | 395 |
Income tax provision (benefit) | (36) | 48 | (164) | 92 |
Income (loss) from continuing operations, net of tax | (118) | 157 | (529) | 303 |
Loans held for investment | 77,490 | 71,992 | 77,490 | 71,992 |
Total Deposits | 35,669 | 30,761 | 35,669 | 30,761 |
Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net interest income (loss) | (92) | (8) | 83 | 25 |
Non-interest income (loss) | (26) | (26) | (77) | (31) |
Total net revenue (loss) | (118) | (34) | 6 | (6) |
Provision (benefit) for credit losses | (1) | 0 | 4 | 0 |
Non-interest expense | 340 | 97 | 458 | 186 |
Income (loss) from continuing operations before income taxes | (457) | (131) | (456) | (192) |
Income tax provision (benefit) | (305) | (109) | (418) | (215) |
Income (loss) from continuing operations, net of tax | (152) | (22) | (38) | 23 |
Loans held for investment | 0 | 0 | 0 | 0 |
Total Deposits | $ 21,765 | $ 18,554 | $ 21,765 | $ 18,554 |

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