CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands		Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning balance at Dec. 31, 2020		$ 5,161,334	$ 537,145	$ 168,133	$ 3,851,208	$ (731,806)	$ 158,635	$ 1,178,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		560,065						560,065
Other comprehensive income (loss), net of income taxes		(164,097)					(164,097)
Cash dividends declared on common stock		(145,843)						(145,843)
Cash dividends declared on preferred stock	[1]	(24,872)						(24,872)
Repurchases of common stock including costs to repurchase		(167,142)				(167,142)
Issuance of common stock for earnout payment		5,080			4,955	125
Restricted share unit vesting and taxes paid related to net share settlement		(7,192)		343	(7,535)
Stock options exercised, net		15,425		695	14,730
Warrants exercised with net settlement and common stock reissued		0			(113)	116		(3)
Share-based compensation expense		20,044			20,044
Ending balance at Sep. 30, 2021		5,252,802	537,145	169,171	3,883,289	(898,707)	(5,462)	1,567,366
Beginning balance at Jun. 30, 2021		5,237,714	537,145	169,108	3,872,949	(824,197)	45,726	1,436,983
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		186,773						186,773
Other comprehensive income (loss), net of income taxes		(51,188)					(51,188)
Cash dividends declared on common stock		(48,099)						(48,099)
Cash dividends declared on preferred stock	[2]	(8,291)						(8,291)
Repurchases of common stock including costs to repurchase		(74,635)				(74,635)
Issuance of common stock for earnout payment		5,080			4,955	125
Restricted share unit vesting and taxes paid related to net share settlement		(613)		37	(650)
Stock options exercised, net		546		26	520
Share-based compensation expense		5,515			5,515
Ending balance at Sep. 30, 2021		5,252,802	537,145	169,171	3,883,289	(898,707)	(5,462)	1,567,366
Beginning balance at Dec. 31, 2021		5,296,800	537,145	169,384	3,894,109	(931,497)	(82,321)	1,709,980
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		552,132						552,132
Other comprehensive income (loss), net of income taxes		(1,451,993)					(1,451,993)
Cash dividends declared on common stock		(148,297)						(148,297)
Cash dividends declared on preferred stock	[1]	(24,872)						(24,872)
Repurchases of common stock including costs to repurchase		(12,987)				(12,987)
Restricted share unit vesting and taxes paid related to net share settlement		(9,688)		391	(5,677)			(4,402)
Stock options exercised, net		6,434		323	6,111
Share-based compensation expense		22,186			22,186
Ending balance at Sep. 30, 2022		4,229,715	537,145	170,098	3,916,729	(944,484)	(1,534,314)	2,084,541
Beginning balance at Jun. 30, 2022		4,584,438	537,145	170,013	3,908,118	(944,484)	(1,026,705)	1,940,351
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		203,044						203,044
Other comprehensive income (loss), net of income taxes		(507,609)					(507,609)
Cash dividends declared on common stock		(49,439)						(49,439)
Cash dividends declared on preferred stock	[2]	(8,291)						(8,291)
Restricted share unit vesting and taxes paid related to net share settlement		(699)		40	385			(1,124)
Stock options exercised, net		830		45	785
Share-based compensation expense		7,441			7,441
Ending balance at Sep. 30, 2022		$ 4,229,715	$ 537,145	$ 170,098	$ 3,916,729	$ (944,484)	$ (1,534,314)	$ 2,084,541

[1] For the nine months ended September 30, 2022 and 2021, dividends per share were $1.18 and $1.10 for Series D and Series E Preferred Stock, respectively.

[2] For the three months ended September 30, 2022 and 2021, dividends per share were $0.39 and $0.37 for Series D and Series E Preferred Stock, respectively.