Investment Securities - Schedule of Contractual Maturities of Debt Securities (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021 |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | $ 6,565 | |
Available for sale, under 1 year, fair value | 6,537 | |
Available for sale, 1 to 5 years, amortized cost | 21,917 | |
Available for sale, 1 to 5 years, fair value | 21,042 | |
Available for sale, 6 to 10 years, amortized cost | 13,462 | |
Available for sale, 6 to 10 years, fair value | 13,338 | |
Available for sale, over 10 years, amortized cost | 4,652 | |
Available for sale, over 10 years, fair value | 4,537 | |
Available for sale, amortized cost | 46,596 | $ 73,440 |
Available for sale, fair value | 45,454 | 73,399 |
Held to maturity, amortized cost | 64,261 | 42,430 |
Investment securities held-to-maturity | 60,103 | 42,271 |
Direct obligations | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 2,049 | |
Available for sale, under 1 year, fair value | 2,039 | |
Available for sale, 1 to 5 years, amortized cost | 7,112 | |
Available for sale, 1 to 5 years, fair value | 6,800 | |
Available for sale, 6 to 10 years, amortized cost | 559 | |
Available for sale, 6 to 10 years, fair value | 572 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 9,720 | 18,111 |
Available for sale, fair value | 9,411 | 17,939 |
Held to maturity, under 1 year, amortized cost | 400 | |
Held to maturity, under 1 year, fair value | 400 | |
Held to maturity, 1 to 5 years, amortized cost | 10,985 | |
Held to maturity, 1 to 5 years, fair value | 10,911 | |
Held to maturity, 6 to 10 years, amortized cost | 24 | |
Held to maturity, 6 to 10 years, fair value | 23 | |
Held to maturity, over 10 years, amortized cost | 15 | |
Held to maturity, over 10 years, fair value | 15 | |
Held to maturity, amortized cost | 11,424 | 2,170 |
Investment securities held-to-maturity | 11,349 | 2,180 |
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 | 56 | |
Available for sale, 1 to 5 years, amortized cost | 549 | |
Available for sale, 1 to 5 years, fair value | 548 | |
Available for sale, 6 to 10 years, amortized cost | 7,862 | |
Available for sale, 6 to 10 years, fair value | 7,793 | |
Available for sale, over 10 years, amortized cost | 1,942 | |
Available for sale, over 10 years, fair value | 1,874 | |
Available for sale, amortized cost | 10,409 | 18,154 |
Available for sale, fair value | 10,271 | 18,208 |
Held to maturity, under 1 year, amortized cost | 157 | |
Held to maturity, under 1 year, fair value | 151 | |
Held to maturity, 1 to 5 years, amortized cost | 556 | |
Held to maturity, 1 to 5 years, fair value | 540 | |
Held to maturity, 6 to 10 years, amortized cost | 4,706 | |
Held to maturity, 6 to 10 years, fair value | 4,141 | |
Held to maturity, over 10 years, amortized cost | 36,241 | |
Held to maturity, over 10 years, fair value | 32,976 | |
Held to maturity, amortized cost | 41,660 | 33,481 |
Investment securities held-to-maturity | 37,808 | 33,265 |
Total U.S. Treasury and federal agencies | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 2,105 | |
Available for sale, under 1 year, fair value | 2,095 | |
Available for sale, 1 to 5 years, amortized cost | 7,661 | |
Available for sale, 1 to 5 years, fair value | 7,348 | |
Available for sale, 6 to 10 years, amortized cost | 8,421 | |
Available for sale, 6 to 10 years, fair value | 8,365 | |
Available for sale, over 10 years, amortized cost | 1,942 | |
Available for sale, over 10 years, fair value | 1,874 | |
Available for sale, amortized cost | 20,129 | 36,265 |
Available for sale, fair value | 19,682 | 36,147 |
Held to maturity, under 1 year, amortized cost | 557 | |
Held to maturity, under 1 year, fair value | 551 | |
Held to maturity, 1 to 5 years, amortized cost | 11,541 | |
Held to maturity, 1 to 5 years, fair value | 11,451 | |
Held to maturity, 6 to 10 years, amortized cost | 4,730 | |
Held to maturity, 6 to 10 years, fair value | 4,164 | |
Held to maturity, over 10 years, amortized cost | 36,256 | |
Held to maturity, over 10 years, fair value | 32,991 | |
Held to maturity, amortized cost | 53,084 | 35,651 |
Investment securities held-to-maturity | 49,157 | 35,445 |
Mortgage-backed securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 174 | |
Available for sale, under 1 year, fair value | 174 | |
Available for sale, 1 to 5 years, amortized cost | 388 | |
Available for sale, 1 to 5 years, fair value | 386 | |
Available for sale, 6 to 10 years, amortized cost | 28 | |
Available for sale, 6 to 10 years, fair value | 27 | |
Available for sale, over 10 years, amortized cost | 1,382 | |
Available for sale, over 10 years, fair value | 1,372 | |
Available for sale, amortized cost | 1,972 | 1,986 |
Available for sale, fair value | 1,959 | 1,995 |
Asset-backed securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 265 | |
Available for sale, under 1 year, fair value | 260 | |
Available for sale, 1 to 5 years, amortized cost | 810 | |
Available for sale, 1 to 5 years, fair value | 801 | |
Available for sale, 6 to 10 years, amortized cost | 459 | |
Available for sale, 6 to 10 years, fair value | 453 | |
Available for sale, over 10 years, amortized cost | 367 | |
Available for sale, over 10 years, fair value | 362 | |
Available for sale, amortized cost | 1,901 | 2,087 |
Available for sale, fair value | 1,876 | 2,087 |
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 | 3,345 | |
Available for sale, under 1 year, fair value | 3,335 | |
Available for sale, 1 to 5 years, amortized cost | 9,142 | |
Available for sale, 1 to 5 years, fair value | 8,800 | |
Available for sale, 6 to 10 years, amortized cost | 2,813 | |
Available for sale, 6 to 10 years, fair value | 2,792 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 15,300 | 23,533 |
Available for sale, fair value | 14,927 | 23,547 |
Held to maturity, under 1 year, amortized cost | 546 | |
Held to maturity, under 1 year, fair value | 543 | |
Held to maturity, 1 to 5 years, amortized cost | 5,303 | |
Held to maturity, 1 to 5 years, fair value | 5,186 | |
Held to maturity, 6 to 10 years, amortized cost | 594 | |
Held to maturity, 6 to 10 years, fair value | 586 | |
Held to maturity, over 10 years, amortized cost | 0 | |
Held to maturity, over 10 years, fair value | 0 | |
Held to maturity, amortized cost | 6,443 | 1,564 |
Investment securities held-to-maturity | 6,315 | 1,555 |
Other | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 267 | |
Available for sale, under 1 year, fair value | 266 | |
Available for sale, 1 to 5 years, amortized cost | 1,940 | |
Available for sale, 1 to 5 years, fair value | 1,812 | |
Available for sale, 6 to 10 years, amortized cost | 122 | |
Available for sale, 6 to 10 years, fair value | 103 | |
Available for sale, over 10 years, amortized cost | 29 | |
Available for sale, over 10 years, fair value | 23 | |
Available for sale, amortized cost | 2,358 | 3,113 |
Available for sale, fair value | 2,204 | 3,098 |
Total non-U.S. debt securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 4,051 | |
Available for sale, under 1 year, fair value | 4,035 | |
Available for sale, 1 to 5 years, amortized cost | 12,280 | |
Available for sale, 1 to 5 years, fair value | 11,799 | |
Available for sale, 6 to 10 years, amortized cost | 3,422 | |
Available for sale, 6 to 10 years, fair value | 3,375 | |
Available for sale, over 10 years, amortized cost | 1,778 | |
Available for sale, over 10 years, fair value | 1,757 | |
Available for sale, amortized cost | 21,531 | 30,719 |
Available for sale, fair value | 20,966 | 30,727 |
Held to maturity, under 1 year, amortized cost | 546 | |
Held to maturity, under 1 year, fair value | 543 | |
Held to maturity, 1 to 5 years, amortized cost | 5,303 | |
Held to maturity, 1 to 5 years, fair value | 5,186 | |
Held to maturity, 6 to 10 years, amortized cost | 594 | |
Held to maturity, 6 to 10 years, fair value | 586 | |
Held to maturity, over 10 years, amortized cost | 0 | |
Held to maturity, over 10 years, fair value | 0 | |
Held to maturity, amortized cost | 6,443 | 1,564 |
Investment securities held-to-maturity | 6,315 | 1,555 |
Student loans | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 64 | |
Available for sale, under 1 year, fair value | 65 | |
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 | 88 | |
Available for sale, over 10 years, fair value | 85 | |
Available for sale, amortized cost | 152 | 209 |
Available for sale, fair value | 150 | 211 |
Held to maturity, under 1 year, amortized cost | 332 | |
Held to maturity, under 1 year, fair value | 319 | |
Held to maturity, 1 to 5 years, amortized cost | 13 | |
Held to maturity, 1 to 5 years, fair value | 13 | |
Held to maturity, 6 to 10 years, amortized cost | 960 | |
Held to maturity, 6 to 10 years, fair value | 941 | |
Held to maturity, over 10 years, amortized cost | 3,163 | |
Held to maturity, over 10 years, fair value | 3,072 | |
Held to maturity, amortized cost | 4,468 | 4,908 |
Investment securities held-to-maturity | 4,345 | 4,942 |
Collateralized loan obligations | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 108 | |
Available for sale, under 1 year, fair value | 106 | |
Available for sale, 1 to 5 years, amortized cost | 485 | |
Available for sale, 1 to 5 years, fair value | 477 | |
Available for sale, 6 to 10 years, amortized cost | 1,197 | |
Available for sale, 6 to 10 years, fair value | 1,177 | |
Available for sale, over 10 years, amortized cost | 588 | |
Available for sale, over 10 years, fair value | 574 | |
Available for sale, amortized cost | 2,378 | 2,155 |
Available for sale, fair value | 2,334 | 2,155 |
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 | 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 | 200 | |
Available for sale, over 10 years, fair value | 195 | |
Available for sale, amortized cost | 200 | 52 |
Available for sale, fair value | 195 | 52 |
Held to maturity, under 1 year, amortized cost | 181 | |
Held to maturity, under 1 year, fair value | 188 | |
Held to maturity, 1 to 5 years, amortized cost | 11 | |
Held to maturity, 1 to 5 years, fair value | 12 | |
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 | 74 | |
Held to maturity, over 10 years, fair value | 86 | |
Held to maturity, amortized cost | 266 | 307 |
Investment securities held-to-maturity | 286 | 329 |
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 | 89 | |
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 | 89 | 91 |
Total asset-backed securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 172 | |
Available for sale, under 1 year, fair value | 171 | |
Available for sale, 1 to 5 years, amortized cost | 575 | |
Available for sale, 1 to 5 years, fair value | 566 | |
Available for sale, 6 to 10 years, amortized cost | 1,197 | |
Available for sale, 6 to 10 years, fair value | 1,177 | |
Available for sale, over 10 years, amortized cost | 876 | |
Available for sale, over 10 years, fair value | 854 | |
Available for sale, amortized cost | 2,820 | 2,506 |
Available for sale, fair value | 2,768 | 2,509 |
Held to maturity, under 1 year, amortized cost | 513 | |
Held to maturity, under 1 year, fair value | 507 | |
Held to maturity, 1 to 5 years, amortized cost | 24 | |
Held to maturity, 1 to 5 years, fair value | 25 | |
Held to maturity, 6 to 10 years, amortized cost | 960 | |
Held to maturity, 6 to 10 years, fair value | 941 | |
Held to maturity, over 10 years, amortized cost | 3,237 | |
Held to maturity, over 10 years, fair value | 3,158 | |
Held to maturity, amortized cost | 4,734 | 5,215 |
Investment securities held-to-maturity | 4,631 | 5,271 |
State and political subdivisions | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 175 | |
Available for sale, under 1 year, fair value | 175 | |
Available for sale, 1 to 5 years, amortized cost | 404 | |
Available for sale, 1 to 5 years, fair value | 401 | |
Available for sale, 6 to 10 years, amortized cost | 407 | |
Available for sale, 6 to 10 years, fair value | 406 | |
Available for sale, over 10 years, amortized cost | 56 | |
Available for sale, over 10 years, fair value | 52 | |
Available for sale, amortized cost | 1,042 | 1,216 |
Available for sale, fair value | 1,034 | 1,272 |
Other U.S. debt securities | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Available for sale, under 1 year, amortized cost | 62 | |
Available for sale, under 1 year, fair value | 61 | |
Available for sale, 1 to 5 years, amortized cost | 997 | |
Available for sale, 1 to 5 years, fair value | 928 | |
Available for sale, 6 to 10 years, amortized cost | 15 | |
Available for sale, 6 to 10 years, fair value | 15 | |
Available for sale, over 10 years, amortized cost | 0 | |
Available for sale, over 10 years, fair value | 0 | |
Available for sale, amortized cost | 1,074 | 2,734 |
Available for sale, fair value | 1,004 | $ 2,744 |
Total | | |
Contractual Maturities Of Debt Investment Securities [Line Items] | | |
Held to maturity, under 1 year, amortized cost | 1,616 | |
Held to maturity, under 1 year, fair value | 1,601 | |
Held to maturity, 1 to 5 years, amortized cost | 16,868 | |
Held to maturity, 1 to 5 years, fair value | 16,662 | |
Held to maturity, 6 to 10 years, amortized cost | 6,284 | |
Held to maturity, 6 to 10 years, fair value | 5,691 | |
Held to maturity, over 10 years, amortized cost | 39,493 | |
Held to maturity, over 10 years, fair value | 36,149 | |
Held to maturity, amortized cost | 64,261 | |
Investment securities held-to-maturity | $ 60,103 | |