CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 357,796	$ 290,270
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	36,000	49,000
Depreciation, amortization and accretion, net	62,393	49,440
Stock compensation costs	19,837	13,186
Deferred income tax benefit	(299)	(22,453)
Net gains on AFS debt securities	(616)	(131)
Net (gains) losses on OREO write-downs and sales	(2,005)	4,221
Loans held-for-sale:
Originations	(701)	0
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	361	0
Net change in accrued interest receivable and other assets	(19,815)	11,999
Net change in accrued expenses and other liabilities	(28,051)	(117,443)
Other operating activities, net	3,728	(203)
Total adjustments	70,832	(12,384)
Net cash provided by operating activities	428,628	277,886
Net (increase) decrease in:
Affordable housing partnership, tax credit and CRA investments	(46,870)	(75,519)
Interest-bearing deposits with banks	6,479	15,458
AFS debt securities:
Proceeds from sales	276,114	108,232
Proceeds from repayments, maturities and redemptions	620,362	663,906
Purchases	(1,822,755)	(2,236,267)
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	106,087	36,206
Purchases	(250,646)	(224,459)
Other changes in loans held-for-investment, net	(1,078,413)	(346,052)
Purchases of premises and equipment, net	(99,046)	(2,506)
Proceeds from sales of OREO	16,034	8,695
Proceeds from repayments and redemptions of HTM debt securities	14,743	15,952
Redemption of FHLB stock, net	195	0
Other investing activities, net	2,663	884
Net cash used in investing activities	(2,255,053)	(2,035,470)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	1,815,576	(126,497)
FHLB advances:
Borrowings	200,000	1,000,000
Repayments	(300,000)	(1,000,000)
Net change in short-term FHLB advances	100,000	0
Net change in repurchase agreements	494,027	270,111
Repayment of lease liabilities	(210)	(209)
Common stock:
Stock tendered for payment of withholding taxes	(25,162)	(17,747)
Repurchase of common stock pursuant to the stock repurchase program	(97,842)	(85,442)
Cash dividends paid	(113,956)	(85,893)
Net cash provided by (used in) financing activities	2,072,433	(45,677)
Effect of exchange rate changes on cash and cash equivalents	4,723	803
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	250,731	(1,802,458)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	4,188,139	5,250,742
CASH AND CASH EQUIVALENTS, END OF PERIOD	4,438,870	3,448,284
Cash paid during the period for:
Interest	390,354	434,683
Income taxes, net	15,383	19,340
Noncash investing and financing activities:
Loans transferred from held-for-investment to held-for-sale	117,081	36,194
Loans transferred to OREO	$ 8,004	$ 6,598