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Investment Securities (Contractual Maturity of Securities) (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Total securities available for sale at amortized cost |  |
1 Year or Less | $ 956 |
After 1 Year through 5 Years | 12,477 |
After 5 Years through 10 Years | 15,944 |
After 10 Years | 33,273 |
Total | 62,650 | $ 45,353
Available-for-sale, fair value |  |
1 Year or Less | 953 |
After 1 Year through 5 Years | 12,432 |
After 5 Years through 10 Years | 15,760 |
After 10 Years | 31,193 |
Total | $ 60,338 | 41,785
Weighted-average yield, GAAP basis, available for sale securities | 3.73% |
Total securities held to maturity at amortized cost |  |
1 Year or Less | $ 10,743 |
After 1 Year through 5 Years | 23,050 |
After 5 Years through 10 Years | 4,604 |
After 10 Years | 45,448 |
Total | 83,845 | 90,784
Held-to-maturity, fair value |  |
1 Year or Less | 10,690 |
After 1 Year through 5 Years | 22,663 |
After 5 Years through 10 Years | 4,532 |
After 10 Years | 43,513 |
Total | $ 81,398 | 86,948
Weighted-average yield, GAAP basis, held to maturity securities | 2.37% |
1 Year or Less |  |
Available-for-sale, fair value |  |
Weighted-average yield, GAAP basis, available for sale securities | 3.34% |
Held-to-maturity, fair value |  |
Weighted-average yield, GAAP basis, held to maturity securities | 1.30% |
After 1 Year through 5 Years |  |
Available-for-sale, fair value |  |
Weighted-average yield, GAAP basis, available for sale securities | 3.61% |
Held-to-maturity, fair value |  |
Weighted-average yield, GAAP basis, held to maturity securities | 1.51% |
After 5 Years through 10 Years |  |
Available-for-sale, fair value |  |
Weighted-average yield, GAAP basis, available for sale securities | 4.15% |
Held-to-maturity, fair value |  |
Weighted-average yield, GAAP basis, held to maturity securities | 3.51% |
After 10 Years |  |
Available-for-sale, fair value |  |
Weighted-average yield, GAAP basis, available for sale securities | 3.59% |
Held-to-maturity, fair value |  |
Weighted-average yield, GAAP basis, held to maturity securities | 2.95% |
U.S. Treasury and government agencies |  |
Total securities available for sale at amortized cost |  |
1 Year or Less | $ 507 |
After 1 Year through 5 Years | 8,700 |
After 5 Years through 10 Years | 11,291 |
After 10 Years | 2,457 |
Total | 22,955 | 7,596
Available-for-sale, fair value |  |
Total | 22,639 | 6,951
Total securities held to maturity at amortized cost |  |
1 Year or Less | 10,401 |
After 1 Year through 5 Years | 20,906 |
After 5 Years through 10 Years | 1,640 |
After 10 Years | 877 |
Total | 33,824 | 36,529
Held-to-maturity, fair value |  |
Total | 33,246 | 35,397
Residential mortgage-backed | Mortgage-backed Securities Agency |  |
Total securities available for sale at amortized cost |  |
1 Year or Less | 1 |
After 1 Year through 5 Years | 218 |
After 5 Years through 10 Years | 3,323 |
After 10 Years | 28,124 |
Total | 31,666 |
Total securities held to maturity at amortized cost |  |
After 1 Year through 5 Years | 8 |
After 5 Years through 10 Years | 295 |
After 10 Years | 40,680 |
Total | 40,983 |
Residential mortgage-backed | Mortgage-backed Securities Non-agency |  |
Total securities available for sale at amortized cost |  |
After 5 Years through 10 Years | 17 |
After 10 Years | 500 |
Total | 517 |
Total securities held to maturity at amortized cost |  |
After 10 Years | 245 |
Total | 245 |
Commercial mortgage servicing rights | Mortgage-backed Securities Agency |  |
Total securities available for sale at amortized cost |  |
1 Year or Less | 72 |
After 1 Year through 5 Years | 953 |
After 5 Years through 10 Years | 626 |
After 10 Years | 329 |
Total | 1,980 |
Total securities held to maturity at amortized cost |  |
After 1 Year through 5 Years | 180 |
After 5 Years through 10 Years | 582 |
After 10 Years | 210 |
Total | 972 |
Commercial mortgage servicing rights | Mortgage-backed Securities Non-agency |  |
Total securities available for sale at amortized cost |  |
1 Year or Less | 1 |
After 1 Year through 5 Years | 103 |
After 5 Years through 10 Years | 86 |
After 10 Years | 562 |
Total | 752 |
Total securities held to maturity at amortized cost |  |
1 Year or Less |  |
After 1 Year through 5 Years | 46 |
After 10 Years | 960 |
Total | 1,006 |
Asset-backed |  |
Total securities available for sale at amortized cost |  |
After 1 Year through 5 Years | 750 |
After 5 Years through 10 Years | 318 |
After 10 Years | 1,161 |
Total | 2,229 |
Total securities held to maturity at amortized cost |  |
1 Year or Less | 17 |
After 1 Year through 5 Years | 1,081 |
After 5 Years through 10 Years | 1,716 |
After 10 Years | 1,192 |
Total | 4,006 |
Other |  |
Total securities available for sale at amortized cost |  |
1 Year or Less | 375 |
After 1 Year through 5 Years | 1,753 |
After 5 Years through 10 Years | 283 |
After 10 Years | 140 |
Total | 2,551 | 2,844
Available-for-sale, fair value |  |
Total | 2,495 | 2,727
Total securities held to maturity at amortized cost |  |
1 Year or Less | 325 |
After 1 Year through 5 Years | 829 |
After 5 Years through 10 Years | 371 |
After 10 Years | 1,284 |
Total | 2,809 | 3,108
Held-to-maturity, fair value |  |
Total | $ 2,829 | $ 3,123

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