Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment		Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	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, 2019				145,378,158
Beginning balance at Dec. 31, 2019	$ 3,695,500	$ (11,432)	[1]	$ 145,378	$ 98,777	$ (1,141,308)	$ 4,571,860	$ (11,432)	[1]	$ 3,674,707	$ (11,432)	[1]	$ 20,793
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(200,306)						(200,306)			(200,306)
Other comprehensive income, net of tax	(25,264)					(25,264)				(25,264)
Cash dividends declared	(342,426)						(342,426)			(342,426)
Share-based awards exercised (in shares)				47,939
Share-based awards exercised	(1,754)			$ 48	(1,802)					(1,754)
Share-based compensation	16,274				16,274					16,274
Purchase of stock (in shares)				(1,136,444)
Purchase of stock	(95,719)			$ (1,136)			(94,583)			(95,719)
Noncontrolling interest activities	(100)												(100)
Ending balance (in shares) at Sep. 30, 2020				144,289,653
Ending balance at Sep. 30, 2020	3,034,773			$ 144,290	113,249	(1,166,572)	3,923,113			3,014,080			20,693
Beginning balance (in shares) at Dec. 31, 2019				145,378,158
Beginning balance at Dec. 31, 2019	3,695,500	(11,432)	[1]	$ 145,378	98,777	(1,141,308)	4,571,860	(11,432)	[1]	3,674,707	(11,432)	[1]	20,793
Ending balance (in shares) at Dec. 31, 2020				144,354,335
Ending balance at Dec. 31, 2020	$ 3,218,003	6,223	[2]	$ 144,354	117,165	(1,036,502)	3,979,779	6,223	[2]	3,204,796	6,223	[2]	13,207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standard Update 2019-12 [Member]
Beginning balance (in shares) at Jun. 30, 2020				144,264,189
Beginning balance at Jun. 30, 2020	$ 2,870,888			$ 144,264	107,819	(1,212,372)	3,809,564			2,849,275			21,613
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	227,531						227,531			227,531
Other comprehensive income, net of tax	45,800					45,800				45,800
Cash dividends declared	(113,982)						(113,982)			(113,982)
Share-based awards exercised (in shares)				25,464
Share-based awards exercised	(964)			$ 26	(990)					(964)
Share-based compensation	6,420				6,420					6,420
Noncontrolling interest activities	(920)												(920)
Ending balance (in shares) at Sep. 30, 2020				144,289,653
Ending balance at Sep. 30, 2020	3,034,773			$ 144,290	113,249	(1,166,572)	3,923,113			3,014,080			20,693
Beginning balance (in shares) at Dec. 31, 2020				144,354,335
Beginning balance at Dec. 31, 2020	3,218,003	$ 6,223	[2]	$ 144,354	117,165	(1,036,502)	3,979,779	$ 6,223	[2]	3,204,796	$ 6,223	[2]	13,207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	642,791						642,791			642,791
Other comprehensive income, net of tax	(36,584)					(36,584)				(36,584)
Cash dividends declared	(351,606)						(351,606)			(351,606)
Share-based awards exercised (in shares)				385,419
Share-based awards exercised	(19,398)			$ 385	(19,783)					(19,398)
Share-based compensation	20,841				20,841					20,841
Purchase of stock (in shares)				(2,236,261)
Purchase of stock	(283,886)			$ (2,236)			(281,650)			(283,886)
Noncontrolling interest activities	174												174
Ending balance (in shares) at Sep. 30, 2021				142,503,493
Ending balance at Sep. 30, 2021	3,196,558			$ 142,503	118,223	(1,073,086)	3,995,537			3,183,177			13,381
Beginning balance (in shares) at Jun. 30, 2021				143,301,673
Beginning balance at Jun. 30, 2021	3,245,145			$ 143,302	111,972	(1,003,554)	3,982,159			3,233,879			11,266
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	228,585						228,585			228,585
Other comprehensive income, net of tax	(69,532)					(69,532)				(69,532)
Cash dividends declared	(116,486)						(116,486)			(116,486)
Share-based awards exercised (in shares)				2,256
Share-based awards exercised	(68)			$ 1	(69)					(68)
Share-based compensation	6,320				6,320					6,320
Purchase of stock (in shares)				(800,436)
Purchase of stock	(99,521)			$ (800)			(98,721)			(99,521)
Noncontrolling interest activities	2,115												2,115
Ending balance (in shares) at Sep. 30, 2021				142,503,493
Ending balance at Sep. 30, 2021	$ 3,196,558			$ 142,503	$ 118,223	$ (1,073,086)	$ 3,995,537			$ 3,183,177			$ 13,381

[1] The Company adopted ASU 2016-13, Measurement of Credit Losses on Financial Instruments, during the first quarter of 2020.

[2] The Company adopted Accounting Standards Update (“ASU”) 2019-12, Simplifying the Accounting for Income Taxes, during the first quarter of 2021.