Consolidated Statements of Changes in Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock, Common	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	616,325			618,121			618,121	(1,796)
Other comprehensive income (loss), net	(263,497)					(263,497)	(263,497)
Repurchase of common stock (in shares)					1,360
Repurchase of common stock	(117,938)				$ (117,938)		(117,938)
Stock options exercised (in shares)		17
Stock options exercised	973		973				973
Non-vested shares awarded, net (in shares)		242
Vesting of non-vested shares (in shares)					68
Vesting of non-vested shares	(5,847)				$ (5,847)		(5,847)
Share-based compensation	9,759		9,759				9,759
Cash dividends on common stock	(144,105)			(144,105)			(144,105)
Capital calls and distributions, net	(18,860)							(18,860)
Balance, end of period (in shares) at Dec. 31, 2021		76,254			7,786
Balance, end 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	520,293			520,273			520,273	20
Other comprehensive income (loss), net	(909,326)					(909,326)	(909,326)
Repurchase of common stock (in shares)					1,633
Repurchase of common stock	(154,887)				$ (154,887)		(154,887)
Stock options exercised (in shares)		1
Stock options exercised	37		37				37
Non-vested shares awarded, net (in shares)		168
Vesting of non-vested shares (in shares)					46
Vesting of non-vested shares	(4,944)				$ (4,944)		(4,944)
Share-based compensation	11,564		11,564				11,564
Cash dividends on common stock	(143,800)			(143,800)			(143,800)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	50							50
Balance, end of period (in shares) at Dec. 31, 2022		76,423			9,465
Balance, end of period at Dec. 31, 2022	4,687,358	$ 5	1,390,395	4,824,164	$ (694,960)	(836,955)	4,682,649	4,709
Net income	531,133			530,746			530,746	387
Other comprehensive income (loss), net	237,855					237,855	237,855
Repurchase of common stock (in shares)					2,114
Repurchase of common stock	(176,819)				$ (176,819)		(176,819)
Non-vested shares awarded, net (in shares)		170
Vesting of non-vested shares (in shares)					47
Vesting of non-vested shares	(4,941)				$ (4,941)		(4,941)
Share-based compensation	16,350		16,350				16,350
Cash dividends on common stock	(143,398)			(143,398)			(143,398)
Capital calls and distributions, net	(2,119)							(2,119)
Balance, end of period (in shares) at Dec. 31, 2023		76,593			11,626
Balance, end of period at Dec. 31, 2023	$ 5,145,419	$ 5	$ 1,406,745	$ 5,211,512	$ (876,720)	$ (599,100)	$ 5,142,442	$ 2,977