Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Operating Activities:
Net income	$ 523,255	$ 482,305
Adjustments to reconcile net income to net cash from operating activities:
Credit loss expense	28,602	32,978
Deferred tax expense (benefit)	(7,124)	3,047
Accretion of loan discounts	(24,079)	(20,588)
Securities premium amortization (discount accretion), net	6,330	28,907
Net (gain) loss on securities transactions	7,512	14
Depreciation and amortization	67,479	65,969
Net (gain) loss on sale/write-down of assets/foreclosed assets	(8,276)	(2,294)
Stock-based compensation	16,206	13,183
Net tax benefit from stock-based compensation	404	1,816
Earnings on life insurance policies	(2,967)	(2,908)
Net change in:
Trading account securities	(8,320)	(2,336)
Lease right-of-use assets	20,156	18,227
Accrued interest receivable and other assets	(111,190)	69,262
Accrued interest payable and other liabilities	74,924	(594,338)
Net cash from operating activities	582,912	93,244
Investing Activities:
Securities held-to-maturity - Purchases	0	(1,500)
Securities held to maturity: Maturities, calls and principal repayments	66,111	77,501
Securities available for sale:
Purchases	(17,045,631)	(15,386,824)
Sales	27,916	41,207
Maturities, calls and principal repayments	14,976,788	13,903,659
Proceeds from sale of loans	9,373	14,119
Net change in loans	(1,777,853)	(712,382)
Benefits received on life insurance policies	2,326	1,777
Proceeds from sales of premises and equipment	8,856	44
Purchases of premises and equipment	(142,676)	(104,136)
Proceeds from sales of foreclosed assets	535	15,135
Net cash from investing activities	(3,874,255)	(2,151,400)
Financing Activities:
Net change in deposits	1,304,507	(205,596)
Net change in short-term borrowings	592,258	230,608
Proceeds from stock option exercises	0	7,881
Purchase of treasury stock	(178,349)	(72,461)
Cash dividends paid on preferred stock	(5,006)	(5,006)
Cash dividends paid on common stock	(193,739)	(191,292)
Net cash from financing activities	1,519,671	(235,866)
Net change in cash and cash equivalents	(1,771,672)	(2,294,022)
Cash and cash equivalents at beginning of period	8,874,055	10,234,258
Cash and cash equivalents at end of period	$ 7,102,383	$ 7,940,236