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Investment Securities - Schedule of Investment Portfolio (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Available-for-sale securities |  |
Amortized cost | $ 25,772,000,000 | $ 26,810,000,000
Gross unrealized gains | 22,000,000 | 5,000,000
Gross unrealized losses | (3,448,000,000) | (4,405,000,000)
Fair value | 22,346,000,000 | 22,410,000,000
Held-to-maturity securities |  |
Amortized cost | 4,668,000,000 | 4,346,000,000
Gross unrealized gains | 179,000,000 | 143,000,000
Gross unrealized losses | (177,000,000) | (196,000,000)
Fair value | 4,670,000,000 | 4,293,000,000
Debt securities, available-for-sale, accrued interest receivable | $ 81,000,000 | $ 73,000,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets
Debt securities, available-for-sale, allowance for credit loss, excluding accrued interest | $ 0 | $ 0
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest | 0 | 0
Debt securities, held-to-maturity, accrued interest receivable | 13,000,000 | 12,000,000
Amortized cost basis in amount sold | 4,600,000,000 |
Gross proceeds received and receivable from sale of lower-yielding available-for-sale securities | 4,100,000,000 |
Pre-tax loss | 495,000,000 |
Operating Segments | Insurance operations |  |
Held-to-maturity securities |  |
Deposited securities | 13,000,000 | 13,000,000
Asset Pledged as Collateral with Right |  |
Available-for-sale securities |  |
Fair value | 4,200,000,000 | 3,400,000,000
Held-to-maturity securities |  |
Securities with the right to sell or pledge | 1,300,000,000 | 439,000,000
Asset Pledged as Collateral with Right | Federal Home Loan Bank advances |  |
Held-to-maturity securities |  |
Securities with the right to sell or pledge | 2,900,000,000 | 2,900,000,000
U.S. Treasury and federal agencies |  |
Available-for-sale securities |  |
Amortized cost | 2,150,000,000 | 2,073,000,000
Gross unrealized gains | 5,000,000 | 0
Gross unrealized losses | (69,000,000) | (200,000,000)
Fair value | 2,086,000,000 | 1,873,000,000
U.S. States and political subdivisions |  |
Available-for-sale securities |  |
Amortized cost | 700,000,000 | 704,000,000
Gross unrealized gains | 0 | 0
Gross unrealized losses | (90,000,000) | (87,000,000)
Fair value | 610,000,000 | 617,000,000
Foreign government |  |
Available-for-sale securities |  |
Amortized cost | 200,000,000 | 198,000,000
Gross unrealized gains | 2,000,000 | 1,000,000
Gross unrealized losses | (3,000,000) | (5,000,000)
Fair value | 199,000,000 | 194,000,000
Agency mortgage-backed residential |  |
Available-for-sale securities |  |
Amortized cost | 15,096,000,000 | 16,765,000,000
Gross unrealized gains | 2,000,000 | 0
Gross unrealized losses | (2,411,000,000) | (3,112,000,000)
Fair value | 12,687,000,000 | 13,653,000,000
Held-to-maturity securities |  |
Amortized cost | 1,332,000,000 | 935,000,000
Gross unrealized gains | 1,000,000 | 0
Gross unrealized losses | (176,000,000) | (196,000,000)
Fair value | 1,157,000,000 | 739,000,000
Hedged asset, fair value hedge, cumulative increase (decrease) | 4,000,000 |
Hedged liability, fair value hedge, cumulative increase (decrease) |  | 72,000,000
Mortgage-backed residential |  |
Available-for-sale securities |  |
Amortized cost | 245,000,000 | 249,000,000
Gross unrealized gains | 0 | 0
Gross unrealized losses | (40,000,000) | (43,000,000)
Fair value | 205,000,000 | 206,000,000
Held-to-maturity securities |  |
Amortized cost | 3,259,000,000 | 3,323,000,000
Gross unrealized gains | 177,000,000 | 142,000,000
Gross unrealized losses | (1,000,000) | 0
Fair value | 3,435,000,000 | 3,465,000,000
Agency mortgage-backed commercial |  |
Available-for-sale securities |  |
Amortized cost | 5,399,000,000 | 4,819,000,000
Gross unrealized gains | 6,000,000 | 1,000,000
Gross unrealized losses | (734,000,000) | (836,000,000)
Fair value | 4,671,000,000 | 3,984,000,000
Held-to-maturity securities |  |
Hedged asset, fair value hedge, cumulative increase (decrease) | 7,000,000 |
Hedged liability, fair value hedge, cumulative increase (decrease) |  | 34,000,000
Asset-backed |  |
Available-for-sale securities |  |
Amortized cost | 75,000,000 | 131,000,000
Gross unrealized gains | 0 | 0
Gross unrealized losses | (1,000,000) | (2,000,000)
Fair value | 74,000,000 | 129,000,000
Held-to-maturity securities |  |
Amortized cost | 77,000,000 | 88,000,000
Gross unrealized gains | 1,000,000 | 1,000,000
Gross unrealized losses | 0 | 0
Fair value | 78,000,000 | 89,000,000
Corporate debt |  |
Available-for-sale securities |  |
Amortized cost | 1,907,000,000 | 1,871,000,000
Gross unrealized gains | 7,000,000 | 3,000,000
Gross unrealized losses | (100,000,000) | (120,000,000)
Fair value | $ 1,814,000,000 | $ 1,754,000,000

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