CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,325,188	$ 1,165,586	$ 1,161,161
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	160,000	174,000	125,000
Depreciation, amortization and accretion, net	213,164	212,338	174,183
Stock compensation costs	76,189	45,535	39,867
Deferred income tax benefit	(7,775)	(14,283)	(49,139)
Net (gains) losses on AFS debt securities	(963)	(2,069)	6,862
Net losses (gains) on other real estate owned (“OREO”) write-downs and sales	10,275	7,275	(3,451)
Loans held-for-sale:
Originations and purchases	(4,105)	(2,881)	(116)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	4,102	3,020	0
Net change in accrued interest receivable and other assets	(97,306)	63,743	(146,270)
Net change in accrued expenses and other liabilities	(167,970)	(242,443)	105,304
Other operating activities, net	(9,099)	1,846	11,508
Total adjustments	176,512	246,081	263,748
Net cash provided by operating activities	1,501,700	1,411,667	1,424,909
Net (increase) decrease in:
Affordable housing partnership, tax credit and CRA investments	(351,786)	(378,305)	(228,550)
Interest-bearing deposits with banks	33,115	(38,352)	128,523
Assets purchased under resale agreements:
Proceeds from paydowns and maturities	0	360,000	219,917
Purchases	0	0	(212,725)
AFS debt securities:
Proceeds from sales	952,413	1,428,829	3,138
Proceeds from repayments, maturities and redemptions	3,851,138	1,547,058	1,470,819
Purchases	(6,939,256)	(7,599,454)	(1,549,846)
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	310,408	715,088	711,862
Purchases	(963,327)	(1,000,637)	(600,930)
Other changes in loans held-for-investment, net	(2,486,715)	(1,341,549)	(4,166,572)
Proceeds from sales of OREO and other foreclosed assets	36,122	33,055	3,721
Proceeds from repayments and redemptions of HTM debt securities	62,832	54,249	61,744
Redemption (purchases) of FHLB stock, net	14,024	(84,079)	0
Other investing activities, net	4,527	8,894	(88,262)
Net cash used in investing activities	(5,476,505)	(6,295,203)	(4,247,161)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	3,863,717	7,108,377	144,468
Net change in short-term borrowings	2	(4,500,000)	4,500,000
FHLB advances:
Proceeds	2,500,000	4,000,400	6,000,000
Repayments	(3,000,000)	(500,400)	(6,000,000)
Repurchase agreements:
Repayment	0	0	(300,000)
Extinguishment cost	0	0	(3,872)
Repayment of lease liabilities and junior subordinated debt	(836)	(117,437)	(871)
Common stock:
Proceeds from issuance pursuant to various stock compensation plans and agreements	3,212	3,023	3,208
Stock tendered for payment of withholding taxes	(19,239)	(14,877)	(23,751)
Repurchase of common stock pursuant to the stock repurchase program	(115,590)	(143,082)	(82,174)
Cash dividends paid	(334,041)	(308,478)	(274,554)
Net cash provided by financing activities	2,897,225	5,527,526	3,962,454
Effect of exchange rate changes on cash and cash equivalents	14,977	(8,232)	(7,002)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(1,062,603)	635,758	1,133,200
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	5,250,742	4,614,984	3,481,784
CASH AND CASH EQUIVALENTS, END OF YEAR	4,188,139	5,250,742	4,614,984
Cash paid during the year for:
Interest	1,742,199	2,057,967	1,213,319
Income taxes, net	278,182	246,945	291,685
Noncash investing and financing activities:
Loans transferred from held-for-investment to held-for-sale	331,227	659,322	739,379
Loans transferred to OREO or other foreclosed assets	$ 33,513	$ 67,379	$ 11,141