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Stockholders' Equity - Reclassifications from AOCI (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Interest income | $ 24,171 | $ 22,913 | $ 23,340 |
Interest expense | 1,598 | 3,120 | 5,173 |
Non-interest income | 824 | 1,325 | 718 |
Income (loss) from continuing operations before income taxes | 15,809 | 3,203 | 6,874 |
Income tax provision | 3,415 | 486 | 1,341 |
Net income (loss) | 12,390 | 2,714 | 5,546 |
Accumulated other comprehensive income | 374 | 3,494 |  |
Other comprehensive income (loss), net of tax | (3,120) | 2,346 | 1,531 |
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Net income (loss) | 854 | 414 | (360) |
Securities available for sale | Securities Held to Maturity |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Accumulated other comprehensive income | 0 | 0 | 0 | $ (190)
Other comprehensive income (loss) before reclassifications | 0 | 0 | 0 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0 | 0 | 26 |
Other comprehensive income (loss), net of tax | 0 | 0 | 26 |
Securities available for sale | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Non-interest income | 2 | 25 | 26 |
Income tax provision | 0 | 6 | 6 |
Net income (loss) | 2 | 19 | 20 |
Securities available for sale | Reclassification out of Accumulated Other Comprehensive Income [Member] | Securities Held to Maturity |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Interest income | 0 | 0 | (35) |
Income tax provision | 0 | 0 | (9) |
Net income (loss) | 0 | 0 | (26) |
Hedging Relationships |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Accumulated other comprehensive income | 118 | 1,362 | 354 | (418)
Other comprehensive income (loss) before reclassifications | (396) | 1,401 | 414 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (848) | (393) |  |
Other comprehensive income (loss), net of tax | (1,244) | 1,008 | 772 |
Hedging Relationships | Interest rate contracts | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Interest income | 957 | 566 | (171) |
Hedging Relationships | Foreign exchange contracts | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Interest income | 1 | 10 | 44 |
Interest expense | (3) | (3) | (2) |
Non-interest income | 163 | (57) | (341) |
Income (loss) from continuing operations before income taxes | 1,118 | 516 | (470) |
Income tax provision | 270 | 123 | (112) |
Net income (loss) | 848 | 393 | (358) |
Foreign Currency Translation Adjustments |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Accumulated other comprehensive income | (21) | (31) | (107) | (177)
Other comprehensive income (loss) before reclassifications | 10 | 76 | 70 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 0 | 0 |  |
Other comprehensive income (loss), net of tax | 10 | 76 | 70 |
Other |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Accumulated other comprehensive income | (20) | (23) | (26) | (39)
Other comprehensive income (loss) before reclassifications | 7 | 5 | 17 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (4) | (2) |  |
Other comprehensive income (loss), net of tax | 3 | 3 | 13 |
Other | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Income (loss) from continuing operations before income taxes | 5 | 2 | 5 |
Income tax provision | 1 | 0 | 1 |
Net income (loss) | 4 | 2 | 4 |
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Accumulated other comprehensive income | 374 | 3,494 | 1,156 | $ (1,263)
Other comprehensive income (loss) before reclassifications | (2,266) | 2,760 | 1,171 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (854) | (414) |  |
Other comprehensive income (loss), net of tax | $ (3,120) | $ 2,346 | $ 1,531 |

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