Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total Parent Equity	Non- controlling Interests in Subsidiaries
Beginning balance (in shares) at Dec. 31, 2016		148,410,422
Beginning balance at Dec. 31, 2016	$ 3,207,356	$ 148,410	$ 56,605	$ (1,013,021)	$ 4,001,734	$ 3,193,728	$ 13,628
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	616,757				616,757	616,757
Other comprehensive (loss) income, net of tax	160,429			160,429		160,429
Cash dividends declared	(396,891)				(396,891)	(396,891)
Share-based awards exercised, including tax benefit (in shares)		131,232
Share-based awards exercised, including tax benefit	(5,239)	$ 132	(5,371)			(5,239)
Share-based compensation	16,892		16,892			16,892
Purchase of stock (in shares)		(1,889,039)
Purchase of stock	(173,524)	$ (1,889)			(171,635)	(173,524)
Noncontrolling interest activities	38,376						38,376
Ending balance (in shares) at Dec. 31, 2017		146,652,615
Ending balance at Dec. 31, 2017	3,464,156	$ 146,653	68,126	(852,592)	4,049,965	3,412,152	52,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	810,474				810,474	810,474
Other comprehensive (loss) income, net of tax	(262,486)			(262,486)		(262,486)
Cash dividends declared	(422,352)				(422,352)	(422,352)
Share-based awards exercised, including tax benefit (in shares)		235,058
Share-based awards exercised, including tax benefit	(10,227)	$ 235	(10,462)			(10,227)
Share-based compensation	20,716		20,716			20,716
Purchase of stock (in shares)		(951,060)
Purchase of stock	(91,983)	$ (951)			(91,032)	(91,983)
Noncontrolling interest activities	(30,464)						(30,464)
Ending balance (in shares) at Dec. 31, 2018		145,936,613
Ending balance at Dec. 31, 2018	3,471,991	$ 145,937	78,380	(1,115,078)	4,341,212	3,450,451	21,540
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	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)	922,000	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	$ 145,378	$ 98,777	$ (1,141,308)	$ 4,571,860	$ 3,674,707	$ 20,793