v3.25.2
Fair Values of Assets and Liabilities - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Financial Assets:      
Interest-bearing deposits with banks $ 4,569,618 $ 4,409,753 $ 2,824,314
Available-for-sale securities 4,885,715 4,141,482 4,329,957
Held-to-maturity securities 2,869,415 2,910,550 3,060,467
Equity securities with readily determinable fair value 273,722 215,412 112,173
FHLB and FRB stock, at cost 282,087 281,407 256,495
Brokerage customer receivables 0 18,102 13,682
Mortgage loans held-for-sale, at fair value 299,606 331,261 411,851
Accrued interest receivable and other 1,610,025 1,739,334 1,671,334
Financial Liabilities:      
FHLB advances 3,151,309 3,151,309 3,176,309
Other borrowings 625,392 534,803 606,579
Subordinated notes 298,458 298,283 298,113
Junior subordinated debentures 253,566 253,566 253,566
Carrying Value      
Financial Assets:      
Cash and cash equivalents 695,564 458,536 415,524
Interest-bearing deposits with banks 4,569,618 4,409,753 2,824,314
Available-for-sale securities 4,885,715 4,141,482 4,329,957
Held-to-maturity securities 3,502,186 3,613,263 3,755,924
Trading account securities 0 4,072 4,134
Equity securities with readily determinable fair value 273,722 215,412 112,173
FHLB and FRB stock, at cost 282,087 281,407 256,495
Brokerage customer receivables 0 18,102 13,682
Mortgage loans held-for-sale, at fair value 299,606 331,261 411,851
Nonqualified deferred compensation assets 17,283 16,653 16,041
Derivative assets 221,106 200,027 243,860
Accrued interest receivable and other 576,813 563,625 505,504
Total 66,365,379 62,308,630 57,564,990
Financial Liabilities:      
Non-maturity deposits 45,484,115 43,092,318 38,778,256
Deposits with stated maturities 10,332,696 9,420,031 9,270,770
FHLB advances 3,151,309 3,151,309 3,176,309
Other borrowings 625,392 534,803 606,579
Subordinated notes 298,458 298,283 298,113
Junior subordinated debentures 253,566 253,566 253,566
Derivative liabilities 161,402 241,750 317,659
Accrued interest payable 57,470 48,364 66,373
Total financial liabilities 60,364,408 57,040,424 52,767,625
Carrying Value | Loans held-for-investment, at fair value      
Financial Assets:      
Loans held-for-investment 136,884 158,795 135,834
Carrying Value | Loans held-for-investment, at amortized cost      
Financial Assets:      
Loans held-for-investment 50,904,795 47,896,242 44,539,697
Fair Value      
Financial Assets:      
Cash and cash equivalents 695,564 458,536 415,524
Interest-bearing deposits with banks 4,569,618 4,409,753 2,824,314
Available-for-sale securities 4,885,715 4,141,482 4,329,957
Held-to-maturity securities 2,869,415 2,910,550 3,060,467
Trading account securities 0 4,072 4,134
Equity securities with readily determinable fair value 273,722 215,412 112,173
FHLB and FRB stock, at cost 282,087 281,407 256,495
Brokerage customer receivables 0 18,102 13,682
Mortgage loans held-for-sale, at fair value 299,606 331,261 411,851
Nonqualified deferred compensation assets 17,283 16,653 16,041
Derivative assets 221,106 200,027 243,860
Accrued interest receivable and other 576,813 563,625 505,504
Total 64,949,164 60,779,924 55,791,155
Financial Liabilities:      
Non-maturity deposits 45,484,115 43,092,318 38,778,256
Deposits with stated maturities 10,319,942 9,423,976 9,248,374
FHLB advances 3,185,868 3,153,524 3,195,138
Other borrowings 625,402 534,406 605,305
Subordinated notes 292,668 286,683 273,666
Junior subordinated debentures 253,573 253,588 253,571
Derivative liabilities 161,402 241,750 317,659
Accrued interest payable 57,470 48,364 66,373
Total financial liabilities 60,380,440 57,034,609 52,738,342
Fair Value | Loans held-for-investment, at fair value      
Financial Assets:      
Loans held-for-investment 136,884 158,795 135,834
Fair Value | Loans held-for-investment, at amortized cost      
Financial Assets:      
Loans held-for-investment $ 50,121,351 $ 47,070,249 $ 43,461,319