Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Operating Activities:
Net income	$ 343,046	$ 307,925
Adjustments to reconcile net income to net cash from operating activities:
Credit loss expense	16,512	26,199
Deferred tax expense (benefit)	(5,070)	(4,017)
Accretion of loan discounts	(18,028)	(13,718)
Securities premium amortization (discount accretion), net	3,188	20,128
Net (gain) loss on securities transactions	0	14
Depreciation and amortization	44,652	43,734
Net (gain) loss on sale/write-down of assets/foreclosed assets	(201)	(2,374)
Stock-based compensation	10,584	8,913
Net tax benefit from stock-based compensation	296	1,376
Earnings on life insurance policies	(1,946)	(1,882)
Net change in:
Trading account securities	(1,549)	(4,309)
Lease right-of-use assets	13,368	12,887
Accrued interest receivable and other assets	(19,338)	1,530
Accrued interest payable and other liabilities	(95,248)	(551,745)
Net cash from operating activities	290,266	(155,339)
Investing Activities:
Securities held-to-maturity - Purchases	0	(1,500)
Securities held to maturity: Maturities, calls and principal repayments	44,136	46,888
Securities available for sale:
Purchases	(11,382,467)	(8,285,846)
Sales	0	38,556
Maturities, calls and principal repayments	9,339,733	6,882,720
Proceeds from sale of loans	0	7,305
Net change in loans	(1,090,725)	(514,111)
Benefits received on life insurance policies	1,573	1,820
Proceeds from sales of premises and equipment	469	38
Purchases of premises and equipment	(98,686)	(67,218)
Proceeds from sales of foreclosed assets	535	15,135
Net cash from investing activities	(3,185,432)	(1,876,213)
Financing Activities:
Net change in deposits	416,151	(1,039,134)
Net change in short-term borrowings	367,468	79,163
Proceeds from stock option exercises	0	5,956
Purchase of treasury stock	(163,193)	(2,676)
Cash dividends paid on preferred stock	(3,338)	(3,338)
Cash dividends paid on common stock	(128,783)	(126,590)
Net cash from financing activities	488,305	(1,086,619)
Net change in cash and cash equivalents	(2,406,861)	(3,118,171)
Cash and cash equivalents at beginning of period	8,874,055	10,234,258
Cash and cash equivalents at end of period	$ 6,467,194	$ 7,116,087