CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,165,586	$ 1,161,161	$ 1,128,083
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	174,000	125,000	73,500
Depreciation and amortization	198,447	163,460	159,851
Amortization of premiums (accretion of discount), net	13,891	10,723	56,703
Stock compensation costs	45,535	39,867	37,601
Deferred income tax benefit	(14,283)	(49,139)	(43,988)
Net gains on sales of loans	(44)	(3,634)	(6,411)
Net (gains) losses on AFS debt securities	(2,069)	6,862	(1,306)
Impairment on other real estate owned (“OREO”) and other foreclosed assets	7,735	0	6,861
Net gains on sales of OREO and other foreclosed assets	(460)	(3,451)	(3,042)
Loans held-for-sale:
Originations	(2,881)	(116)	(447)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	3,020	0	461
Distributions received from equity method investees	5,645	11,282	7,586
Net change in accrued interest receivable and other assets	63,743	(146,270)	187,512
Net change in accrued expenses and other liabilities	(242,443)	105,304	461,385
Other operating activities, net	(3,755)	3,860	1,673
Total adjustments	246,081	263,748	937,939
Net cash provided by operating activities	1,411,667	1,424,909	2,066,022
Net (increase) decrease in:
Affordable housing partnership, tax credit and CRA investments	(378,305)	(228,550)	(167,303)
Interest-bearing deposits with banks	(38,352)	128,523	596,994
Assets purchased under resale agreements:
Proceeds from paydowns and maturities	360,000	219,917	1,951,388
Purchases	0	(212,725)	(390,077)
AFS debt securities:
Proceeds from sales	1,428,829	3,138	129,181
Proceeds from repayments, maturities and redemptions	1,547,058	1,470,819	896,726
Purchases	(7,599,454)	(1,549,846)	(1,070,608)
HTM debt securities:
Proceeds from repayments, maturities and redemptions	54,249	61,744	75,635
Purchases	0	0	(50,000)
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	715,088	711,862	602,725
Purchases	(1,000,637)	(600,930)	(657,620)
Other changes in loans held-for-investment, net	(1,341,549)	(4,166,572)	(6,516,182)
Proceeds from sales of OREO and other foreclosed assets	33,055	3,721	6,482
Distributions received from equity method investees	23,598	23,774	18,221
Purchases of FHLB stock, net	(84,079)	0	0
Other investing activities, net	(14,704)	(112,036)	(8,454)
Net cash used in investing activities	(6,295,203)	(4,247,161)	(4,582,892)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	7,108,377	144,468	2,709,427
Net change in short-term borrowings	(4,500,000)	4,500,000	6
FHLB advances:
Proceeds	4,000,400	6,000,000	4,950,200
Repayments	(500,400)	(6,000,000)	(5,200,200)
Repurchase agreements:
Repayment	0	(300,000)	0
Extinguishment cost	0	(3,872)	0
Long-term debt and lease liabilities:
Repayment of junior subordinated debt and lease liabilities	(117,437)	(871)	(943)
Common stock:
Proceeds from issuance pursuant to various stock compensation plans and agreements	3,023	3,208	3,178
Stock tendered for payment of withholding taxes	(14,877)	(23,751)	(19,087)
Repurchase of common stock pursuant to the stock repurchase program	(143,082)	(82,174)	(99,990)
Cash dividends paid	(308,478)	(274,554)	(228,381)
Net cash provided by financing activities	5,527,526	3,962,454	2,114,210
Effect of exchange rate changes on cash and cash equivalents	(8,232)	(7,002)	(28,491)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	635,758	1,133,200	(431,151)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	4,614,984	3,481,784	3,912,935
CASH AND CASH EQUIVALENTS, END OF YEAR	5,250,742	4,614,984	3,481,784
Cash paid during the year for:
Interest	2,057,967	1,213,319	249,587
Income taxes, net	246,945	291,685	281,269
Noncash investing and financing activities:
Loans transferred from held-for-investment to held-for-sale	659,322	739,379	623,777
Securities transferred from AFS to HTM debt securities	0	0	3,010,003
Loans transferred to OREO or other foreclosed assets	$ 67,379	$ 11,141	$ 270