CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 721,496	$ 600,523
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	69,000	94,000
Depreciation, amortization and accretion, net	126,918	130,778
Stock compensation costs	36,855	26,480
Deferred income tax expense (benefit)	7,787	(24,288)
Net gains on AFS debt securities	(3,547)	(877)
Net (gains) losses on OREO write-downs and sales	(369)	2,925
Loans held-for-sale:
Originations	(2,357)	(628)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	2,347	406
Net change in accrued interest receivable and other assets	60,955	(125,159)
Net change in accrued expenses and other liabilities	13,482	(144,368)
Other operating activities, net	(2,537)	(3,238)
Total adjustments	308,534	(43,969)
Net cash provided by operating activities	1,030,030	556,554
Net (increase) decrease in:
Affordable housing partnership, tax credit and CRA investments	(132,756)	(152,801)
Interest-bearing deposits with banks	4,943	(56,040)
AFS debt securities:
Proceeds from sales	1,206,685	318,294
Proceeds from repayments, maturities and redemptions	1,240,280	1,703,393
Purchases	(3,882,854)	(3,567,424)
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	219,639	126,548
Purchases	(426,122)	(530,041)
Other changes in loans held-for-investment, net	(1,880,980)	(867,055)
Purchases of premises and equipment, net	(112,528)	(4,614)
Proceeds from sales of OREO	16,380	24,424
Proceeds from repayments and redemptions of HTM debt securities	32,129	32,213
Purchases of FHLB stock, net	(5,119)	0
Other investing activities, net	5,715	3,420
Net cash used in investing activities	(3,714,588)	(2,969,683)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	2,959,274	1,843,902
FHLB advances:
Proceeds	1,800,000	2,000,000
Repayments	(1,300,000)	(2,000,000)
Net change in short-term FHLB advances	(500,000)	0
Net change in repurchase agreements	956,894	0
Repayment of lease liabilities	(421)	(419)
Common stock:
Proceeds from issuance pursuant to various stock compensation plans and agreements	1,593	1,721
Stock tendered for payment of withholding taxes	(26,431)	(18,058)
Repurchase of common stock pursuant to the stock repurchase program	(97,841)	(89,135)
Cash dividends paid	(223,640)	(168,643)
Net cash provided by financing activities	3,569,428	1,569,368
Effect of exchange rate changes on cash and cash equivalents	15,914	2,960
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	900,784	(840,801)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	4,188,139	5,250,742
CASH AND CASH EQUIVALENTS, END OF PERIOD	5,088,923	4,409,941
Cash paid during the period for:
Interest	792,598	874,296
Income taxes, net	149,833	227,110
Noncash investing and financing activities:
Loans transferred from held-for-investment to held-for-sale	224,687	138,408
Loans transferred from held-for-sale to held-for-investment	3,497	0
Loans transferred to OREO	$ 19,645	$ 25,506