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Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
AOCI beginning balance | $ (9,916) |  |
Other comprehensive income (loss) before reclassifications | 666 | $ (10,400) | $ (2,266)
Amounts reclassified from AOCI into earnings | 982 | 110 | (854)
Other comprehensive income (loss), net of tax | 1,648 | (10,290) | (3,120)
AOCI ending balance | (8,268) | (9,916) |
Securities Available for Sale | Securities Available for Sale |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
AOCI beginning balance | (7,676) | 297 | 2,186
Other comprehensive income (loss) before reclassifications | 881 | (7,980) | (1,887)
Amounts reclassified from AOCI into earnings | 26 | 7 | (2)
Other comprehensive income (loss), net of tax | 907 | (7,973) | (1,889)
AOCI ending balance | (6,769) | (7,676) | 297
Hedging relationships: |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
AOCI beginning balance | (2,182) | 118 | 1,362
Other comprehensive income (loss) before reclassifications | (268) | (2,404) | (396)
Amounts reclassified from AOCI into earnings | 957 | 104 | (848)
Other comprehensive income (loss), net of tax | 689 | (2,300) | (1,244)
AOCI ending balance | (1,493) | (2,182) | 118
Foreign Currency Translation Adjustments |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
AOCI beginning balance | (20) | (21) | (31)
Other comprehensive income (loss) before reclassifications | 46 | 1 | 10
Amounts reclassified from AOCI into earnings | 0 | 0 | 0
Other comprehensive income (loss), net of tax | 46 | 1 | 10
AOCI ending balance | 26 | (20) | (21)
Other: |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
AOCI beginning balance | (38) | (20) | (23)
Other comprehensive income (loss) before reclassifications | 7 | (17) | 7
Amounts reclassified from AOCI into earnings | (1) | (1) | (4)
Other comprehensive income (loss), net of tax | 6 | (18) | 3
AOCI ending balance | (32) | (38) | (20)
Total |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
AOCI beginning balance | (9,916) | 374 | 3,494
AOCI ending balance | (8,268) | (9,916) | 374
Net investment hedges |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |
Other comprehensive gain (loss) | $ (126) | $ 305 | $ 22

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