Consolidated Statements of Changes in Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Shareholders' Equity [Member]	Non-Controlling Interests [Member]
Balance, beginning of period (in shares) at Dec. 31, 2020		75,995			6,358
Balance, beginning of period at Dec. 31, 2020	$ 5,291,561	$ 5	$ 1,368,062	$ 3,973,675	$ (411,344)	$ 335,868	$ 5,266,266	$ 25,295
Net income	311,415			312,481			312,481	(1,066)
Other comprehensive income (loss)	(109,100)					(109,100)	(109,100)
Repurchase of common stock (in shares)					753
Repurchase of common stock	(63,868)				$ (63,868)		(63,868)
Stock options exercised (in shares)		17
Stock options exercised	949		949				949
Non-vested shares awarded, net (in shares)		246
Vesting of non-vested shares (in shares)					68
Vesting of non-vested shares	(5,815)				$ (5,815)		(5,815)
Share-based compensation	4,090		4,090				4,090
Cash dividends on common stock	(72,026)			(72,026)			(72,026)
Capital calls and distributions, net	(2,655)							(2,655)
Balance, end of period (in shares) at Jun. 30, 2021		76,258			7,179
Balance, end of period at Jun. 30, 2021	5,354,551	$ 5	1,373,101	4,214,130	$ (481,027)	226,768	5,332,977	21,574
Balance, beginning of period (in shares) at Mar. 31, 2021		76,244			6,686
Balance, beginning of period at Mar. 31, 2021	5,262,344	$ 5	1,371,735	4,083,543	$ (437,230)	221,409	5,239,462	22,882
Net income	167,107			166,421			166,421	686
Other comprehensive income (loss)	5,359					5,359	5,359
Repurchase of common stock (in shares)					493
Repurchase of common stock	(43,797)				$ (43,797)		(43,797)
Stock options exercised (in shares)		0
Stock options exercised	0		0				0
Non-vested shares awarded, net (in shares)		14
Vesting of non-vested shares (in shares)					0
Vesting of non-vested shares	0				$ 0		0
Share-based compensation	1,366		1,366				1,366
Cash dividends on common stock	(35,834)			(35,834)			(35,834)
Capital calls and distributions, net	(1,994)							(1,994)
Balance, end of period (in shares) at Jun. 30, 2021		76,258			7,179
Balance, end of period at Jun. 30, 2021	5,354,551	$ 5	1,373,101	4,214,130	$ (481,027)	226,768	5,332,977	21,574
Balance, beginning of period (in shares) at Dec. 31, 2021		76,254			7,786
Balance, beginning of period at Dec. 31, 2021	5,368,371	$ 5	1,378,794	4,447,691	$ (535,129)	72,371	5,363,732	4,639
Net income	195,310			195,334			195,334	(24)
Other comprehensive income (loss)	(674,999)					(674,999)	(674,999)
Repurchase of common stock (in shares)					770
Repurchase of common stock	(72,478)				$ (72,478)		(72,478)
Stock options exercised (in shares)		1
Stock options exercised	37		37				37
Non-vested shares awarded, net (in shares)		153
Vesting of non-vested shares (in shares)					46
Vesting of non-vested shares	(4,944)				$ (4,944)		(4,944)
Share-based compensation	2,845		2,845				2,845
Cash dividends on common stock	(72,188)			(72,188)			(72,188)
Capital calls and distributions, net	(412)							(412)
Balance, end of period (in shares) at Jun. 30, 2022		76,408			8,602
Balance, end of period at Jun. 30, 2022	4,741,542	$ 5	1,381,676	4,570,837	$ (612,551)	(602,628)	4,737,339	4,203
Balance, beginning of period (in shares) at Mar. 31, 2022		76,412			8,308
Balance, beginning of period at Mar. 31, 2022	4,853,524	$ 5	1,381,666	4,473,884	$ (588,147)	(417,826)	4,849,582	3,942
Net income	132,858			132,846			132,846	12
Other comprehensive income (loss)	(184,802)					(184,802)	(184,802)
Repurchase of common stock (in shares)					294
Repurchase of common stock	(24,404)				$ (24,404)		(24,404)
Stock options exercised (in shares)		0
Stock options exercised	0		0				0
Non-vested shares awarded, net (in shares)		(4)
Vesting of non-vested shares (in shares)					0
Vesting of non-vested shares	0				$ 0		0
Share-based compensation	10		10				10
Cash dividends on common stock	(35,893)			(35,893)			(35,893)
Capital calls and distributions, net	249							249
Balance, end of period (in shares) at Jun. 30, 2022		76,408			8,602
Balance, end of period at Jun. 30, 2022	$ 4,741,542	$ 5	$ 1,381,676	$ 4,570,837	$ (612,551)	$ (602,628)	$ 4,737,339	$ 4,203