Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Preferred Stock [Member]	Preferred Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Capital Surplus	Capital Surplus Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock	Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjusted Balance	Non-Controlling Interest	Non-Controlling Interest Cumulative Effect, Period of Adoption, Adjusted Balance
Beginning Balance at Dec. 31, 2019	$ 3,138,472		$ 3,142,238	$ 144,784	$ 144,784	$ 563,978	$ 563,978	$ 2,151,464	$ 2,151,464	$ 201,562		$ 205,328	$ (37,548)	$ (37,548)	$ 110,444	$ 110,444	$ 3,788	$ 3,788
Beginning Balance (Accounting Standards Update 2016-13) at Dec. 31, 2019		$ 3,766									$ 3,766
Net income	353,885									354,057							(172)
Other comprehensive income (loss)	220,933														220,933
Distributions to non-controlling interest	(691)																(691)
Stock Redeemed or Called During Period, Value	(150,000)			(144,784)						(5,216)
Purchase of treasury stock	(54,163)												(54,163)
Cash dividends paid on common stock	(120,818)									(120,818)
Cash dividends paid on preferred stock	(6,750)									(6,750)
Stock-based compensation	14,915							14,915
Stock Issued During Period RSAs and SARs	1,309							(24,271)					25,580
Dividends, Common Stock, Stock	(886)					25,374		294,180		(353,601)			33,161
Balance at Dec. 31, 2020	3,399,972			0		589,352		2,436,288		73,000			(32,970)		331,377		2,925
Net income	540,590									530,765							9,825
Other comprehensive income (loss)	(254,297)														(254,297)
Distributions to non-controlling interest	(1,065)																(1,065)
Purchase of treasury stock	(129,361)												(129,361)
Sale of non-controlling interest of a subsidiary	0							659									(659)
Cash dividends paid on common stock	(122,693)									(122,693)
Stock-based compensation	15,415							15,415
Stock Issued During Period RSAs and SARs	911							(21,799)					22,710
Dividends, Common Stock, Stock	(1,148)					21,452		259,331		(388,579)			106,648
Balance at Dec. 31, 2021	3,448,324			0		610,804		2,689,894		92,493			(32,973)		77,080		11,026
Net income	500,020									488,399							11,621
Other comprehensive income (loss)	(1,163,944)														(1,163,944)
Distributions to non-controlling interest	(6,361)																(6,361)
Purchase of treasury stock	(186,622)												(186,622)
Cash dividends paid on common stock	(127,466)									(127,466)
Stock-based compensation	16,995							16,995
Stock Issued During Period RSAs and SARs	1,905							(19,563)					21,468
Dividends, Common Stock, Stock	(1,274)					18,515		245,633		(421,806)			156,384
Balance at Dec. 31, 2022	$ 2,481,577			$ 0		$ 629,319		$ 2,932,959		$ 31,620			$ (41,743)		$ (1,086,864)		$ 16,286