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Securities - Schedule of Available for Sale Securities in an Unrealized Loss Position (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Held-to-maturity securities: |  |
Temporarily impaired securities, fair value, less than 12 months | $ 13,161 | $ 2,004
Temporarily impaired securities, gross unrealized losses, less than 12 months | 146 | 11
Temporarily impaired securities, fair value, 12 months or longer | 19,632 | 22,705
Temporarily impaired securities, gross unrealized losses, 12 months or longer | 2,939 | 2,836
Temporarily impaired securities, fair value | 32,793 | 24,709
Temporarily impaired securities, gross unrealized losses | 3,085 | 2,847
U.S. Treasury, agencies and corporations |  |
Securities available for sale: |  |
Fair value, less than 12 months | 2,082 | 0
Gross unrealized losses, less than 12 months | 18 | 0
Fair value, 12 months or longer | 522 | 525
Gross unrealized losses, 12 months or longer | 20 | 17
Fair Value | 2,604 | 525
Gross Unrealized Losses | 38 | 17
Agency residential collateralized mortgage obligations |  |
Securities available for sale: |  |
Fair value, less than 12 months | 0 | 0
Gross unrealized losses, less than 12 months | 0 | 0
Fair value, 12 months or longer | 7,219 | 7,677
Gross unrealized losses, 12 months or longer | 1,740 | 1,708
Fair Value | 7,219 | 7,677
Gross Unrealized Losses | 1,740 | 1,708
Held-to-maturity securities: |  |
Fair value, less than 12 months | 493 | 240
Gross unrealized losses, less than 12 months | 7 | 2
Fair value, 12 months or longer | 2,854 | 3,023
Gross unrealized losses, 12 months or longer | 201 | 174
Fair Value | 3,347 | 3,263
Gross Unrealized Losses | 208 | 176
Agency residential mortgage-backed securities |  |
Securities available for sale: |  |
Fair value, less than 12 months | 7,268 | 1,226
Gross unrealized losses, less than 12 months | 85 | 7
Fair value, 12 months or longer | 3,793 | 5,583
Gross unrealized losses, 12 months or longer | 457 | 450
Fair Value | 11,061 | 6,809
Gross Unrealized Losses | 542 | 457
Held-to-maturity securities: |  |
Fair value, less than 12 months | 3,056 | 526
Gross unrealized losses, less than 12 months | 33 | 2
Fair value, 12 months or longer | 118 | 125
Gross unrealized losses, 12 months or longer | 11 | 11
Fair Value | 3,174 | 651
Gross Unrealized Losses | 44 | 13
Agency commercial mortgage-backed securities |  |
Securities available for sale: |  |
Fair value, less than 12 months | 250 | 7
Gross unrealized losses, less than 12 months | 3 | 0
Fair value, 12 months or longer | 3,531 | 3,777
Gross unrealized losses, 12 months or longer | 364 | 335
Fair Value | 3,781 | 3,784
Gross Unrealized Losses | 367 | 335
Held-to-maturity securities: |  |
Fair value, less than 12 months | 0 | 0
Gross unrealized losses, less than 12 months | 0 | 0
Fair value, 12 months or longer | 1,574 | 1,914
Gross unrealized losses, 12 months or longer | 144 | 139
Fair Value | 1,574 | 1,914
Gross Unrealized Losses | 144 | 139
Asset-backed securities |  |
Held-to-maturity securities: |  |
Fair value, less than 12 months | 0 | 0
Gross unrealized losses, less than 12 months | 0 | 0
Fair value, 12 months or longer | 18 | 75
Gross unrealized losses, 12 months or longer | 1 | 2
Fair Value | 18 | 75
Gross Unrealized Losses | 1 | 2
Other securities |  |
Held-to-maturity securities: |  |
Fair value, less than 12 months | 12 | 5
Gross unrealized losses, less than 12 months | 0 | 0
Fair value, 12 months or longer | 3 | 6
Gross unrealized losses, 12 months or longer | 1 | 0
Fair Value | 15 | 11
Gross Unrealized Losses | $ 1 | $ 0

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