Consolidated Statements Of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023
OPERATING ACTIVITIES:
Net income		$ 397,157	$ 373,716
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses		19,395	29,572
Provision for depreciation and amortization		40,513	36,661
Amortization of investment security premiums, net		2,781	13,345
Investment securities (gains) losses, net (A)	[1]	(6,846)	(7,384)
Net (gains) losses on sales of loans held for sale		(1,823)	(705)
Originations of loans held for sale		(73,502)	(40,470)
Proceeds from sales of loans held for sale		77,468	40,775
Net (increase) decrease in trading debt securities, excluding unsettled transactions		(25,771)	14,354
Purchase of interest rate floor		0	(54,449)
Stock-based compensation		12,731	12,594
(Increase) decrease in interest receivable		(4,878)	(7,861)
Increase (decrease) in interest payable		(2,564)	41,622
Increase (decrease) in income taxes payable		16,791	(52)
Other changes, net		263,062	(83,973)
Net cash provided by (used in) operating activities		714,514	367,745
INVESTING ACTIVITIES:
Cash Paid in Acquisition, Net of Cash Received		0	(6,365)
Distributions received from equity-method investment		0	1,434
Proceeds from sales of investment securities (A)	[1]	1,272,927	1,141,949
Proceeds from maturities/pay downs of investment securities (A)	[1]	1,753,061	1,315,175
Purchases of investment securities (A)	[1]	(2,095,180)	(190,637)
Net (increase) decrease in loans		86,128	(849,375)
Securities purchased under agreements to resell		(350,000)	0
Repayments of securities purchased under agreements to resell		325,000	375,000
Purchases of premises and equipment		(32,114)	(72,563)
Sales of premises and equipment		8,858	3,751
Net cash provided by (used in) investing activities		968,680	1,718,369
FINANCING ACTIVITIES:
Net increase (decrease) in non-interest bearing, savings, interest checking and money market deposits		(17,928)	(2,995,739)
Net increase (decrease) in certificates of deposit		(250,608)	1,980,677
Net increase (decrease) in federal funds purchased and securities sold under agreements to repurchase		(726,586)	(96,553)
Proceeds from FHLBank Borrowings, Financing Activities		0	2,250,000
Payments of FHLBank Borrowings, Financing Activities		0	(1,750,000)
Net increase (decrease) in other borrowings		8,797	(6,083)
Purchases of treasury stock		(123,558)	(56,541)
Payments of Dividends		(110,484)	(101,160)
Net cash provided by (used in) financing activities		(1,220,367)	(775,399)
Increase (decrease) in cash, cash equivalents and restricted cash		462,827	1,310,715
Cash, cash equivalents and restricted cash at beginning of year		2,687,283	897,801
Cash, cash equivalents and restricted cash at September 30		3,150,110	2,208,516
Supplemental Cash Flow Information:
Income tax payments, net		86,048	97,018
Interest paid on deposits and borrowings		329,117	227,352
Loans transferred to foreclosed real estate		$ 1,138	$ 133

[1] Available for sale debt securities, equity securities, and other securities.