CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	(DISTRIBUTIONS IN EXCESS OF EARNINGS) EARNINGS IN EXCESS OF DISTRIBUTIONS	ACCUMULATED OTHER COMPREHENSIVE ITEMS, NET	NONCONTROLLING INTERESTS	REDEEMABLE NONCONTROLLING INTERESTS
Beginning of Period at Dec. 31, 2019	$ 1,464,227	$ 2,873	$ 4,298,566	$ (2,574,896)	$ (262,581)	$ 265
Balance (in shares) at Dec. 31, 2019		287,299,645
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	1,917	$ 6	1,911
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		579,497
Change in equity related to redeemable noncontrolling interests	4,000		4,000				$ (4,000)
Parent cash dividends declared	(179,512)			(179,512)
Foreign currency translation adjustment	(222,305)				(222,305)
Change in fair value of derivative instruments	(8,362)				(8,362)
Net income (loss)	63,876			63,975		(99)
End of period at Mar. 31, 2020	1,123,841	$ 2,879	4,304,477	(2,690,433)	(493,248)	166
Balance (in shares) at Mar. 31, 2020		287,879,142
Beginning of redeemable noncontrolling interest at Dec. 31, 2019							67,682
Increase (Decrease) in Temporary Equity [Roll Forward]
Change in equity related to redeemable noncontrolling interests	4,000		4,000				(4,000)
Foreign currency translation adjustment							(1,347)
Net income (loss)							1,016
Noncontrolling interests dividends							(1,194)
Ending of redeemable noncontrolling interest at Mar. 31, 2020							62,157
Beginning of Period at Dec. 31, 2020	$ 1,136,729	$ 2,883	4,340,078	(2,950,339)	(255,893)	0
Balance (in shares) at Dec. 31, 2020	288,273,049	288,273,049
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation	$ 6,398	$ 5	6,393
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		454,698
Change in equity related to redeemable noncontrolling interests	680		680				(680)
Parent cash dividends declared	(178,685)			(178,685)
Foreign currency translation adjustment	(66,224)				(66,224)
Change in fair value of derivative instruments	15,206				15,206
Net income (loss)	45,603			45,603
End of period at Mar. 31, 2021	$ 959,707	$ 2,888	4,347,151	$ (3,083,421)	$ (306,911)	$ 0
Balance (in shares) at Mar. 31, 2021	288,727,747	288,727,747
Beginning of redeemable noncontrolling interest at Dec. 31, 2020	$ 59,805						59,805
Increase (Decrease) in Temporary Equity [Roll Forward]
Change in equity related to redeemable noncontrolling interests	680		$ 680				(680)
Foreign currency translation adjustment							(131)
Net income (loss)							1,028
Noncontrolling interests equity contributions							2,200
Noncontrolling interests dividends							(621)
Ending of redeemable noncontrolling interest at Mar. 31, 2021	$ 61,601						$ 61,601