Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating Activities:
Net income	$ 427,690	$ 495,422
Adjustments to reconcile net income to net cash from operating activities:
Credit loss expense	48,823	30,190
Deferred tax expense (benefit)	(11,165)	(3,047)
Accretion of loan discounts	(16,265)	(13,074)
Securities premium amortization (discount accretion), net	35,577	50,614
Net (gain) loss on securities transactions	(16)	(66)
Depreciation and amortization	61,413	56,257
Net (gain) loss on sale/write-down of assets/foreclosed assets	(343)	(194)
Stock-based compensation	10,020	12,646
Net tax benefit from stock-based compensation	1,280	583
Earnings on life insurance policies	(2,785)	(2,164)
Net change in:
Trading account securities	(620)	(1,020)
Lease right-of-use assets	18,891	17,347
Accrued interest receivable and other assets	322,645	55,440
Accrued interest payable and other liabilities	30,085	(137,088)
Net cash from operating activities	925,230	561,846
Investing Activities:
Securities held-to-maturity - Purchases	0	(1,147,624)
Securities held to maturity: Maturities, calls and principal repayments	46,757	154,465
Securities available for sale:
Purchases	(7,435,990)	(13,445,382)
Sales	60,591	1,904,067
Maturities, calls and principal repayments	8,773,027	13,073,663
Proceeds from sale of loans	1,191	2,215
Net change in loans	(1,244,886)	(1,257,033)
Payments to Acquire Businesses, Net of Cash Acquired	(703)	0
Benefits received on life insurance policies	1,063	1,000
Proceeds from sales of premises and equipment	17	1,282
Purchases of premises and equipment	(90,129)	(118,062)
Proceeds from sales of repossessed properties	2,590	583
Net cash from investing activities	113,528	(830,826)
Financing Activities:
Net change in deposits	(199,947)	(2,961,961)
Net change in short-term borrowings	(104,976)	(964,096)
Proceeds from stock option exercises	15,484	3,042
Purchase of treasury stock	(52,273)	(40,496)
Cash dividends paid on preferred stock	(5,006)	(5,006)
Cash dividends paid on common stock	(180,942)	(172,552)
Net cash from financing activities	(527,660)	(4,141,069)
Net change in cash and cash equivalents	511,098	(4,410,049)
Cash and cash equivalents at beginning of period	8,687,276	12,028,132
Cash and cash equivalents at end of period	$ 9,198,374	$ 7,618,083