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Securities - Schedule of Details of Securities (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
SECURITIES AVAILABLE FOR SALE |  |
Amortized Cost | $ 41,004 | $ 41,846
Gross Unrealized Gains | 142 | 267
Gross Unrealized Losses | 2,687 | 2,517
Fair Value | 38,459 | 39,596
HELD-TO-MATURITY SECURITIES |  |
Amortized Cost | 9,515 | 8,622
Gross Unrealized Gains | 7 | 21
Gross Unrealized Losses | 398 | 330
Fair Value | 9,124 | 8,313
Debt securities, available for sale, accrued interest | 115 | 121
Debt securities, held to maturity, accrued interest | 32 | 26
Basis adjustments for securities | (26) | 99
U.S. Treasury, agencies and corporations |  |
SECURITIES AVAILABLE FOR SALE |  |
Amortized Cost | 7,102 | 7,842
Gross Unrealized Gains | 11 | 61
Gross Unrealized Losses | 38 | 17
Fair Value | 7,075 | 7,886
Agency residential collateralized mortgage obligations |  |
SECURITIES AVAILABLE FOR SALE |  |
Amortized Cost | 9,726 | 10,269
Gross Unrealized Gains | 9 | 4
Gross Unrealized Losses | 1,740 | 1,708
Fair Value | 7,995 | 8,565
HELD-TO-MATURITY SECURITIES |  |
Amortized Cost | 3,754 | 4,026
Gross Unrealized Gains | 2 | 8
Gross Unrealized Losses | 208 | 176
Fair Value | 3,548 | 3,858
Agency residential mortgage-backed securities |  |
SECURITIES AVAILABLE FOR SALE |  |
Amortized Cost | 20,028 | 19,451
Gross Unrealized Gains | 122 | 201
Gross Unrealized Losses | 542 | 457
Fair Value | 19,608 | 19,195
HELD-TO-MATURITY SECURITIES |  |
Amortized Cost | 3,935 | 2,374
Gross Unrealized Gains | 5 | 12
Gross Unrealized Losses | 44 | 13
Fair Value | 3,896 | 2,373
Agency commercial mortgage-backed securities |  |
SECURITIES AVAILABLE FOR SALE |  |
Amortized Cost | 4,148 | 4,284
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 367 | 335
Fair Value | 3,781 | 3,950
HELD-TO-MATURITY SECURITIES |  |
Amortized Cost | 1,786 | 2,121
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 144 | 139
Fair Value | 1,642 | 1,983
Asset-backed securities |  |
HELD-TO-MATURITY SECURITIES |  |
Amortized Cost | 19 | 77
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 1 | 2
Fair Value | 18 | 75
Debt securities, held-to-maturity, purchase of senior notes | 16 | 74
Other securities |  |
HELD-TO-MATURITY SECURITIES |  |
Amortized Cost | 21 | 24
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 1 | 0
Fair Value | $ 20 | $ 24

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