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Securities - Schedule of Debt Securities (Details) - USD ($) | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
AFS debt securities: |  |
Amortized Cost | $ 13,619,781,000 | $ 11,505,775,000
Gross Unrealized Gains | 69,974,000 | 15,273,000
Gross Unrealized Losses | (475,635,000) | (674,237,000)
Allowance for Credit Losses | (1,900,000) | 0
Fair Value | 13,212,220,000 | 10,846,811,000
HTM debt securities |  |
Amortized Cost | 2,870,058,000 | 2,917,413,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (390,312,000) | (529,659,000)
Allowance for Credit Losses | 0 | 0
Fair Value | 2,479,746,000 | 2,387,754,000
Total debt securities |  |
Amortized Cost | 16,489,839,000 | 14,423,188,000
Gross Unrealized Gains | 69,974,000 | 15,273,000
Gross Unrealized Losses | (865,947,000) | (1,203,896,000)
Allowance for Credit Losses | (1,900,000) |
Fair Value | 15,691,966,000 | 13,234,565,000
AFS and HTM, accrued interest | 54,000,000 | 45,000,000
Government National Mortgage Association (GNMA) |  |
AFS debt securities: |  |
Amortized Cost | 9,600,000,000 | 7,300,000,000
Fair Value | 9,600,000,000 | 7,200,000,000
HTM debt securities |  |
Amortized Cost | 79,000,000 | 86,000,000
Fair Value | 65,000,000 | 68,000,000
U.S. Treasury securities |  |
AFS debt securities: |  |
Amortized Cost | 1,010,053,000 | 676,300,000
Gross Unrealized Gains | 837,000 | 0
Gross Unrealized Losses | (16,977,000) | (38,035,000)
Allowance for Credit Losses | 0 |
Fair Value | 993,913,000 | 638,265,000
HTM debt securities |  |
Amortized Cost | 540,666,000 | 535,080,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (15,779,000) | (35,222,000)
Allowance for Credit Losses | 0 |
Fair Value | 524,887,000 | 499,858,000
U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
AFS debt securities: |  |
Amortized Cost | 287,687,000 | 308,220,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (30,033,000) | (45,633,000)
Allowance for Credit Losses | 0 |
Fair Value | 257,654,000 | 262,587,000
HTM debt securities |  |
Amortized Cost | 1,007,055,000 | 1,004,479,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (146,921,000) | (200,259,000)
Allowance for Credit Losses | 0 |
Fair Value | 860,134,000 | 804,220,000
US government agencies And U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
AFS debt securities: |  |
Amortized Cost | 292,564,000 | 472,535,000
Gross Unrealized Gains | 86,000 | 886,000
Gross Unrealized Losses | (27,312,000) | (47,207,000)
Allowance for Credit Losses | 0 |
Fair Value | 265,338,000 | 426,214,000
HTM debt securities |  |
Amortized Cost | 474,747,000 | 486,388,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (69,471,000) | (91,461,000)
Allowance for Credit Losses | 0 |
Fair Value | 405,276,000 | 394,927,000
US government agencies And U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
AFS debt securities: |  |
Amortized Cost | 10,251,714,000 | 7,974,768,000
Gross Unrealized Gains | 68,588,000 | 12,278,000
Gross Unrealized Losses | (187,649,000) | (248,786,000)
Allowance for Credit Losses | 0 |
Fair Value | 10,132,653,000 | 7,738,260,000
HTM debt securities |  |
Amortized Cost | 662,127,000 | 703,833,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (124,176,000) | (155,626,000)
Allowance for Credit Losses | 0 |
Fair Value | 537,951,000 | 548,207,000
Municipal securities |  |
AFS debt securities: |  |
Amortized Cost | 277,275,000 | 287,301,000
Gross Unrealized Gains | 20,000 | 38,000
Gross Unrealized Losses | (34,193,000) | (37,186,000)
Allowance for Credit Losses | 0 |
Fair Value | 243,102,000 | 250,153,000
HTM debt securities |  |
Amortized Cost | 185,463,000 | 187,633,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (33,965,000) | (47,091,000)
Allowance for Credit Losses | 0 |
Fair Value | 151,498,000 | 140,542,000
Non-agency commercial mortgage-backed Securities |  |
AFS debt securities: |  |
Amortized Cost | 214,987,000 | 294,235,000
Gross Unrealized Gains | 0 | 2,000
Gross Unrealized Losses | (22,139,000) | (35,767,000)
Allowance for Credit Losses | (1,900,000) |
Fair Value | 190,948,000 | 258,470,000
Non-agency residential mortgage-backed Securities |  |
AFS debt securities: |  |
Amortized Cost | 452,208,000 | 514,527,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (58,421,000) | (80,919,000)
Allowance for Credit Losses | 0 |
Fair Value | 393,787,000 | 433,608,000
Corporate debt securities |  |
AFS debt securities: |  |
Amortized Cost | 554,158,000 | 653,500,000
Gross Unrealized Gains | 6,000 | 0
Gross Unrealized Losses | (89,183,000) | (127,334,000)
Allowance for Credit Losses | 0 |
Fair Value | 464,981,000 | 526,166,000
Foreign government bonds |  |
AFS debt securities: |  |
Amortized Cost | 247,249,000 | 244,803,000
Gross Unrealized Gains | 437,000 | 2,069,000
Gross Unrealized Losses | (9,231,000) | (12,992,000)
Allowance for Credit Losses | 0 |
Fair Value | 238,455,000 | 233,880,000
Asset-backed securities |  |
AFS debt securities: |  |
Amortized Cost | 31,886,000 | 35,086,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (497,000) | (371,000)
Allowance for Credit Losses | 0 |
Fair Value | $ 31,389,000 | 34,715,000
Collateralized loan obligations (“CLOs”) |  |
AFS debt securities: |  |
Amortized Cost |  | 44,500,000
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | (7,000)
Fair Value |  | $ 44,493,000

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