Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets:
Cash and due from banks	$ 772,095	$ 555,778
Interest-bearing deposits	13,684,988	15,985,244
Federal funds sold	0	34,075
Resell agreements	0	7,903
Total cash and cash equivalents	14,457,083	16,583,000
Securities held to maturity, net of allowance for credit losses of $158 at March 31, 2022 and $158 at December 31, 2021	1,665,465	1,749,179
Securities available for sale, at estimated fair value	16,184,539	13,924,628
Trading account securities	29,518	25,162
Loans, net of unearned discounts	16,542,537	16,336,397
Less: Allowance for credit losses on loans	(246,835)	(248,666)
Net loans	16,295,702	16,087,731
Premises and equipment, net	1,046,410	1,050,331
Goodwill	654,952	654,952
Other intangible assets, net	720	866
Cash surrender value of life insurance policies	189,471	190,139
Accrued interest receivable and other assets	772,191	612,502
Total assets	51,296,051	50,878,490
Liabilities:
Non-interest-bearing demand deposits	18,114,430	18,423,018
Interest-bearing deposits	26,316,499	24,272,678
Total deposits	44,430,929	42,695,696
Federal funds purchased	35,200	25,925
Repurchase agreements	1,842,618	2,740,799
Junior subordinated deferrable interest debentures, net of unamortized issuance costs	123,026	123,011
Subordinated notes, net of unamortized issuance costs	99,217	99,178
Accrued interest payable and other liabilities	988,769	754,326
Total liabilities	47,519,759	46,438,935
Shareholders’ Equity:
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; 150,000 Series B shares ($1,000 liquidation preference) issued at March 31, 2022 and December 31, 2021	145,452	145,452
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 64,236,306 shares issued at March 31, 2022 and December 31, 2021	642	642
Additional paid-in capital	1,012,033	1,009,921
Retained earnings	3,002,642	2,956,966
Accumulated other comprehensive income (loss), net of tax	(371,790)	347,318
Treasury stock, at cost; 142,099 shares at March 31, 2022 and 250,070 shares at December 31, 2021	(12,687)	(20,744)
Total shareholders’ equity	3,776,292	4,439,555
Total liabilities and shareholders’ equity	$ 51,296,051	$ 50,878,490