Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Total Parent Equity	Total Parent Equity Cumulative Effect, Period of Adoption, Adjustment	Non- controlling Interests in Subsidiaries
Beginning balance (in shares) at Dec. 31, 2018			145,936,613
Beginning balance at Dec. 31, 2018	$ 3,471,991		$ 145,937	$ 78,380	$ (1,115,078)		$ 4,341,212		$ 3,450,451		$ 21,540
Beginning balance (Accounting Standards Update 2018-02) at Dec. 31, 2018		$ 0				$ (122,526)		$ 122,526		$ 0
Beginning balance (Accounting Standards Update 2016-02) at Dec. 31, 2018		4,797						$ 4,797		4,797
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	621,085						621,085		621,085
Other comprehensive (loss) income, net of tax	96,296				96,296				96,296
Cash dividends declared	(444,372)						(444,372)		(444,372)
Share-based awards exercised, including tax benefit (in shares)			240,568
Share-based awards exercised, including tax benefit	(11,413)		$ 240	(11,653)					(11,413)
Share-based compensation	32,050			32,050					32,050
Purchase of stock (in shares)			(799,023)
Purchase of stock	(74,187)		$ (799)				(73,388)		(74,187)
Noncontrolling interest activities	(747)										(747)
Ending balance (in shares) at Dec. 31, 2019			145,378,158
Ending balance at Dec. 31, 2019	$ 3,695,500	(11,432)	$ 145,378	98,777	(1,141,308)		4,571,860		3,674,707	(11,432)	20,793
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13
Net income (loss)	$ (29,102)						(29,102)		(29,102)
Other comprehensive (loss) income, net of tax	104,806				104,806				104,806
Cash dividends declared	(456,469)						(456,469)		(456,469)
Share-based awards exercised, including tax benefit (in shares)			112,621
Share-based awards exercised, including tax benefit	(4,120)		$ 113	(4,233)					(4,120)
Share-based compensation	22,621			22,621					22,621
Purchase of stock (in shares)			(1,136,444)
Purchase of stock	(96,215)		$ (1,137)				(95,078)		(96,215)
Noncontrolling interest activities	(7,586)										(7,586)
Ending balance (in shares) at Dec. 31, 2020			144,354,335
Ending balance at Dec. 31, 2020	$ 3,218,003	$ 6,223	$ 144,354	117,165	(1,036,502)		3,979,779		3,204,796	$ 6,223	13,207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2019-12
Net income (loss)	$ 898,790						898,790		898,790
Other comprehensive (loss) income, net of tax	178,763				178,763				178,763
Cash dividends declared	(467,482)						(467,482)		(467,482)
Share-based awards exercised, including tax benefit (in shares)			440,667
Share-based awards exercised, including tax benefit	(22,346)		$ 441	(22,787)					(22,346)
Share-based compensation	25,597			25,597					25,597
Purchase of stock (in shares)			(2,614,319)
Purchase of stock	(333,599)		$ (2,614)	0			(330,985)		(333,599)
Noncontrolling interest activities	(659)										(659)
Ending balance (in shares) at Dec. 31, 2021			142,180,683
Ending balance at Dec. 31, 2021	$ 3,503,290		$ 142,181	$ 119,975	$ (857,739)		$ 4,086,325		$ 3,490,742		$ 12,548