Investment Securities - Schedule of Contractual Maturities of Debt Securities (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022 |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | $ 8,163 | |
Available for sale, under 1 year, fair value | 8,089 | |
Available for sale, 1 to 5 years, amortized cost | 19,361 | |
Available for sale, 1 to 5 years, fair value | 18,581 | |
Available for sale, 6 to 10 years, amortized cost | 11,240 | |
Available for sale, 6 to 10 years, fair value | 11,058 | |
Available for sale, over 10 years, amortized cost | 5,449 | |
Available for sale, over 10 years, fair value | 5,318 | |
Available for sale, amortized cost | 44,213 | $ 41,858 |
Available for sale, fair value | 43,046 | 40,579 |
Held to maturity, amortized cost | 63,510 | 64,700 |
Investment securities held-to-maturity | 56,863 | 57,913 |
Direct obligations | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 789 | |
Available for sale, under 1 year, fair value | 787 | |
Available for sale, 1 to 5 years, amortized cost | 5,850 | |
Available for sale, 1 to 5 years, fair value | 5,667 | |
Available for sale, 6 to 10 years, amortized cost | 633 | |
Available for sale, 6 to 10 years, fair value | 642 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 7,272 | 8,232 |
Available for sale, fair value | 7,096 | 7,981 |
Held to maturity, under 1 year, amortized cost | 5,797 | |
Held to maturity, under 1 year, fair value | 5,718 | |
Held to maturity, 1 to 5 years, amortized cost | 5,969 | |
Held to maturity, 1 to 5 years, fair value | 5,722 | |
Held to maturity, 6 to 10 years, amortized cost | 24 | |
Held to maturity, 6 to 10 years, fair value | 22 | |
Held to maturity, over 10 years, amortized cost | 12 | |
Held to maturity, over 10 years, fair value | 12 | |
Held to maturity, amortized cost | 11,802 | 11,693 |
Investment securities held-to-maturity | 11,474 | 11,352 |
Mortgage-backed securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 56 | |
Available for sale, under 1 year, fair value | 55 | |
Available for sale, 1 to 5 years, amortized cost | 804 | |
Available for sale, 1 to 5 years, fair value | 793 | |
Available for sale, 6 to 10 years, amortized cost | 5,287 | |
Available for sale, 6 to 10 years, fair value | 5,180 | |
Available for sale, over 10 years, amortized cost | 3,181 | |
Available for sale, over 10 years, fair value | 3,075 | |
Available for sale, amortized cost | 9,328 | 8,767 |
Available for sale, fair value | 9,103 | 8,509 |
Held to maturity, under 1 year, amortized cost | 136 | |
Held to maturity, under 1 year, fair value | 121 | |
Held to maturity, 1 to 5 years, amortized cost | 570 | |
Held to maturity, 1 to 5 years, fair value | 530 | |
Held to maturity, 6 to 10 years, amortized cost | 4,611 | |
Held to maturity, 6 to 10 years, fair value | 3,853 | |
Held to maturity, over 10 years, amortized cost | 35,997 | |
Held to maturity, over 10 years, fair value | 30,848 | |
Held to maturity, amortized cost | 41,314 | 42,307 |
Investment securities held-to-maturity | 35,352 | 36,280 |
Total U.S. Treasury and federal agencies | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 845 | |
Available for sale, under 1 year, fair value | 842 | |
Available for sale, 1 to 5 years, amortized cost | 6,654 | |
Available for sale, 1 to 5 years, fair value | 6,460 | |
Available for sale, 6 to 10 years, amortized cost | 5,920 | |
Available for sale, 6 to 10 years, fair value | 5,822 | |
Available for sale, over 10 years, amortized cost | 3,181 | |
Available for sale, over 10 years, fair value | 3,075 | |
Available for sale, amortized cost | 16,600 | 16,999 |
Available for sale, fair value | 16,199 | 16,490 |
Held to maturity, under 1 year, amortized cost | 5,933 | |
Held to maturity, under 1 year, fair value | 5,839 | |
Held to maturity, 1 to 5 years, amortized cost | 6,539 | |
Held to maturity, 1 to 5 years, fair value | 6,252 | |
Held to maturity, 6 to 10 years, amortized cost | 4,635 | |
Held to maturity, 6 to 10 years, fair value | 3,875 | |
Held to maturity, over 10 years, amortized cost | 36,009 | |
Held to maturity, over 10 years, fair value | 30,860 | |
Held to maturity, amortized cost | 53,116 | 54,000 |
Investment securities held-to-maturity | 46,826 | 47,632 |
Mortgage-backed securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 156 | |
Available for sale, under 1 year, fair value | 156 | |
Available for sale, 1 to 5 years, amortized cost | 261 | |
Available for sale, 1 to 5 years, fair value | 261 | |
Available for sale, 6 to 10 years, amortized cost | 0 | |
Available for sale, 6 to 10 years, fair value | 0 | |
Available for sale, over 10 years, amortized cost | 1,118 | |
Available for sale, over 10 years, fair value | 1,107 | |
Available for sale, amortized cost | 1,535 | 1,642 |
Available for sale, fair value | 1,524 | 1,623 |
Asset-backed securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 328 | |
Available for sale, under 1 year, fair value | 323 | |
Available for sale, 1 to 5 years, amortized cost | 491 | |
Available for sale, 1 to 5 years, fair value | 485 | |
Available for sale, 6 to 10 years, amortized cost | 479 | |
Available for sale, 6 to 10 years, fair value | 473 | |
Available for sale, over 10 years, amortized cost | 299 | |
Available for sale, over 10 years, fair value | 296 | |
Available for sale, amortized cost | 1,597 | 1,696 |
Available for sale, fair value | 1,577 | 1,669 |
Non-U.S. sovereign, supranational and non-U.S. agency | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 6,024 | |
Available for sale, under 1 year, fair value | 5,971 | |
Available for sale, 1 to 5 years, amortized cost | 8,554 | |
Available for sale, 1 to 5 years, fair value | 8,172 | |
Available for sale, 6 to 10 years, amortized cost | 2,813 | |
Available for sale, 6 to 10 years, fair value | 2,778 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 17,391 | 14,512 |
Available for sale, fair value | 16,921 | 14,089 |
Held to maturity, under 1 year, amortized cost | 2,495 | |
Held to maturity, under 1 year, fair value | 2,441 | |
Held to maturity, 1 to 5 years, amortized cost | 3,663 | |
Held to maturity, 1 to 5 years, fair value | 3,481 | |
Held to maturity, 6 to 10 years, amortized cost | 644 | |
Held to maturity, 6 to 10 years, fair value | 600 | |
Held to maturity, over 10 years, amortized cost | 0 | |
Held to maturity, over 10 years, fair value | 0 | |
Held to maturity, amortized cost | 6,802 | 6,603 |
Investment securities held-to-maturity | 6,522 | 6,299 |
Other | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 274 | |
Available for sale, under 1 year, fair value | 269 | |
Available for sale, 1 to 5 years, amortized cost | 1,931 | |
Available for sale, 1 to 5 years, fair value | 1,798 | |
Available for sale, 6 to 10 years, amortized cost | 205 | |
Available for sale, 6 to 10 years, fair value | 183 | |
Available for sale, over 10 years, amortized cost | 10 | |
Available for sale, over 10 years, fair value | 7 | |
Available for sale, amortized cost | 2,420 | 2,255 |
Available for sale, fair value | 2,257 | 2,091 |
Total non-U.S. debt securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 6,782 | |
Available for sale, under 1 year, fair value | 6,719 | |
Available for sale, 1 to 5 years, amortized cost | 11,237 | |
Available for sale, 1 to 5 years, fair value | 10,716 | |
Available for sale, 6 to 10 years, amortized cost | 3,497 | |
Available for sale, 6 to 10 years, fair value | 3,434 | |
Available for sale, over 10 years, amortized cost | 1,427 | |
Available for sale, over 10 years, fair value | 1,410 | |
Available for sale, amortized cost | 22,943 | 20,105 |
Available for sale, fair value | 22,279 | 19,472 |
Held to maturity, under 1 year, amortized cost | 2,495 | |
Held to maturity, under 1 year, fair value | 2,441 | |
Held to maturity, 1 to 5 years, amortized cost | 3,663 | |
Held to maturity, 1 to 5 years, fair value | 3,481 | |
Held to maturity, 6 to 10 years, amortized cost | 644 | |
Held to maturity, 6 to 10 years, fair value | 600 | |
Held to maturity, over 10 years, amortized cost | 0 | |
Held to maturity, over 10 years, fair value | 0 | |
Held to maturity, amortized cost | 6,802 | 6,603 |
Investment securities held-to-maturity | 6,522 | 6,299 |
Student loans | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 35 | |
Available for sale, under 1 year, fair value | 35 | |
Available for sale, 1 to 5 years, amortized cost | 0 | |
Available for sale, 1 to 5 years, fair value | 0 | |
Available for sale, 6 to 10 years, amortized cost | 0 | |
Available for sale, 6 to 10 years, fair value | 0 | |
Available for sale, over 10 years, amortized cost | 71 | |
Available for sale, over 10 years, fair value | 70 | |
Available for sale, amortized cost | 106 | 116 |
Available for sale, fair value | 105 | 115 |
Held to maturity, under 1 year, amortized cost | 251 | |
Held to maturity, under 1 year, fair value | 243 | |
Held to maturity, 1 to 5 years, amortized cost | 37 | |
Held to maturity, 1 to 5 years, fair value | 36 | |
Held to maturity, 6 to 10 years, amortized cost | 851 | |
Held to maturity, 6 to 10 years, fair value | 834 | |
Held to maturity, over 10 years, amortized cost | 2,445 | |
Held to maturity, over 10 years, fair value | 2,376 | |
Held to maturity, amortized cost | 3,584 | 3,955 |
Investment securities held-to-maturity | 3,489 | 3,822 |
Collateralized loan obligations | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 121 | |
Available for sale, under 1 year, fair value | 120 | |
Available for sale, 1 to 5 years, amortized cost | 358 | |
Available for sale, 1 to 5 years, fair value | 353 | |
Available for sale, 6 to 10 years, amortized cost | 1,458 | |
Available for sale, 6 to 10 years, fair value | 1,442 | |
Available for sale, over 10 years, amortized cost | 515 | |
Available for sale, over 10 years, fair value | 513 | |
Available for sale, amortized cost | 2,452 | 2,394 |
Available for sale, fair value | 2,428 | 2,355 |
Non-agency CMBS and RMBS | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 0 | |
Available for sale, under 1 year, fair value | 0 | |
Available for sale, 1 to 5 years, amortized cost | 20 | |
Available for sale, 1 to 5 years, fair value | 20 | |
Available for sale, 6 to 10 years, amortized cost | 0 | |
Available for sale, 6 to 10 years, fair value | 0 | |
Available for sale, over 10 years, amortized cost | 255 | |
Available for sale, over 10 years, fair value | 250 | |
Available for sale, amortized cost | 275 | 237 |
Available for sale, fair value | 270 | 231 |
Held to maturity, under 1 year, amortized cost | 2 | |
Held to maturity, under 1 year, fair value | 8 | |
Held to maturity, 1 to 5 years, amortized cost | 0 | |
Held to maturity, 1 to 5 years, fair value | 0 | |
Held to maturity, 6 to 10 years, amortized cost | 0 | |
Held to maturity, 6 to 10 years, fair value | 0 | |
Held to maturity, over 10 years, amortized cost | 6 | |
Held to maturity, over 10 years, fair value | 18 | |
Held to maturity, amortized cost | 8 | 142 |
Investment securities held-to-maturity | 26 | 160 |
Other | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 0 | |
Available for sale, under 1 year, fair value | 0 | |
Available for sale, 1 to 5 years, amortized cost | 90 | |
Available for sale, 1 to 5 years, fair value | 90 | |
Available for sale, 6 to 10 years, amortized cost | 0 | |
Available for sale, 6 to 10 years, fair value | 0 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 90 | 90 |
Available for sale, fair value | 90 | 88 |
Total asset-backed securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 156 | |
Available for sale, under 1 year, fair value | 155 | |
Available for sale, 1 to 5 years, amortized cost | 468 | |
Available for sale, 1 to 5 years, fair value | 463 | |
Available for sale, 6 to 10 years, amortized cost | 1,458 | |
Available for sale, 6 to 10 years, fair value | 1,442 | |
Available for sale, over 10 years, amortized cost | 841 | |
Available for sale, over 10 years, fair value | 833 | |
Available for sale, amortized cost | 2,923 | 2,837 |
Available for sale, fair value | 2,893 | 2,789 |
Held to maturity, under 1 year, amortized cost | 253 | |
Held to maturity, under 1 year, fair value | 251 | |
Held to maturity, 1 to 5 years, amortized cost | 37 | |
Held to maturity, 1 to 5 years, fair value | 36 | |
Held to maturity, 6 to 10 years, amortized cost | 851 | |
Held to maturity, 6 to 10 years, fair value | 834 | |
Held to maturity, over 10 years, amortized cost | 2,451 | |
Held to maturity, over 10 years, fair value | 2,394 | |
Held to maturity, amortized cost | 3,592 | 4,097 |
Investment securities held-to-maturity | 3,515 | 3,982 |
State and political subdivisions | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 125 | |
Available for sale, under 1 year, fair value | 124 | |
Available for sale, 1 to 5 years, amortized cost | 260 | |
Available for sale, 1 to 5 years, fair value | 253 | |
Available for sale, 6 to 10 years, amortized cost | 337 | |
Available for sale, 6 to 10 years, fair value | 334 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 722 | 839 |
Available for sale, fair value | 711 | 823 |
Other U.S. debt securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 255 | |
Available for sale, under 1 year, fair value | 249 | |
Available for sale, 1 to 5 years, amortized cost | 742 | |
Available for sale, 1 to 5 years, fair value | 689 | |
Available for sale, 6 to 10 years, amortized cost | 28 | |
Available for sale, 6 to 10 years, fair value | 26 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 1,025 | 1,078 |
Available for sale, fair value | 964 | $ 1,005 |
Total | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Held to maturity, under 1 year, amortized cost | 8,681 | |
Held to maturity, under 1 year, fair value | 8,531 | |
Held to maturity, 1 to 5 years, amortized cost | 10,239 | |
Held to maturity, 1 to 5 years, fair value | 9,769 | |
Held to maturity, 6 to 10 years, amortized cost | 6,130 | |
Held to maturity, 6 to 10 years, fair value | 5,309 | |
Held to maturity, over 10 years, amortized cost | 38,460 | |
Held to maturity, over 10 years, fair value | 33,254 | |
Held to maturity, amortized cost | 63,510 | |
Investment securities held-to-maturity | $ 56,863 | |