Consolidated Statement Of Stockholders' Equity - USD ($) $ in Thousands	Total	Temporary Equity	Common Stock	Additional Paid-in Capital	Distributions in Excess of Accumulated Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interests	Total Stockholders' Equity	Total Equity	Common OP Units Temporary Equity	Common OP Units Common Stock	Common OP Units Additional Paid-in Capital	Common OP Units Non-controlling Interests	Common OP Units Total Equity
Beginning Balance at Dec. 31, 2019		$ 78,004
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity Interests		98
Temporary Equity, Stock Issued During Period, Value, New Issues				$ 181			$ 8,819	$ 9,000	$ 9,000
Net income / (loss)		(1,195)
Distributions		(457)
Ending Balance at Mar. 31, 2020		76,450
Beginning Balance at Dec. 31, 2019			$ 932	5,213,264	$ (1,393,141)	$ (1,331)	56,228	3,875,952	3,953,956
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and common OP units, net			1	(7,141)				(7,140)	(7,140)
Conversion of OP units				(446)			446		0
Equity interests					85			85	(13)
Share-based compensation - amortization and forfeitures				4,928	93			5,021	5,021
Foreign currency translation						(6,994)	(306)	(7,300)	(7,300)
Remeasurement Of Notes Receivable And Equity Method Investments					1,953			1,953	1,953
Net income / (loss)					(14,514)		231	(14,283)	(15,478)
Distributions					(73,730)		(2,918)	(76,648)	(77,105)
Ending Balance at Mar. 31, 2020			933	5,211,678	(1,479,424)	(8,325)	61,608	3,786,470	3,862,920
Beginning Balance at Dec. 31, 2019		78,004
Ending Balance at Jun. 30, 2020		83,982
Beginning Balance at Dec. 31, 2019			932	5,213,264	(1,393,141)	(1,331)	56,228	3,875,952	3,953,956
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in carrying value of temporary equity	$ (3,428)
Asset held for sale	5,770
Ending Balance at Jun. 30, 2020			983	5,847,598	(1,496,542)	(4,475)	71,805	4,419,369	4,503,351
Beginning Balance at Mar. 31, 2020		76,450
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity Interests		(641)
Net income / (loss)		(300)
Distributions		(492)
Ending Balance at Jun. 30, 2020		83,982
Beginning Balance at Mar. 31, 2020			933	5,211,678	(1,479,424)	(8,325)	61,608	3,786,470	3,862,920
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and common OP units, net			49	628,506			10,114	638,669	638,669
Conversion of OP units									0	$ 0	$ (1)	$ (130)	$ 131
Equity interests					67		0	67	708
Issuance of Series F preferred OP units		(8,965)							(8,965)
Share-based compensation - amortization and forfeitures				7,284	92			7,376	7,376
Change in carrying value of temporary equity	3,872
Foreign currency translation						3,850	22	3,872	3,872
Net income / (loss)	58,910				60,492		3,163	63,655	63,355
Distributions					(77,635)		(2,971)	(80,606)	(81,098)
Ending Balance at Jun. 30, 2020			983	5,847,598	(1,496,542)	(4,475)	71,805	4,419,369	4,503,351
Beginning Balance at Dec. 31, 2020		264,379
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity Interests		52
Net income / (loss)		(1,568)
Distributions		(1,804)
Ending Balance at Mar. 31, 2021		261,059
Beginning Balance at Dec. 31, 2020	5,627,328		1,076	7,087,658	(1,566,636)	3,178	102,052	5,627,328	5,891,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and common OP units, net			42	522,222				522,264	522,264
Conversion of OP units									0			(1,150)	1,150
Equity interests					52			52	0
Share-based compensation - amortization and forfeitures				7,118	62			7,180	7,180
Foreign currency translation						855	40	895	895
Other				(20)	758		(141)	597	597
Net income / (loss)					27,647		1,862	29,509	27,941
Distributions					(92,823)		(3,260)	(96,083)	(97,887)
Ending Balance at Mar. 31, 2021			1,118	7,618,128	(1,631,044)	4,033	99,403	6,091,638	6,352,697
Beginning Balance at Dec. 31, 2020		264,379
Ending Balance at Jun. 30, 2021		285,603
Beginning Balance at Dec. 31, 2020	5,627,328		1,076	7,087,658	(1,566,636)	3,178	102,052	5,627,328	5,891,707
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in carrying value of temporary equity	(2,115)
Asset held for sale	14,921
Ending Balance at Jun. 30, 2021	6,655,824		1,159	8,163,095	(1,614,243)	5,197	100,616	6,655,824	6,941,427
Beginning Balance at Mar. 31, 2021		261,059
Increase (Decrease) in Temporary Equity [Roll Forward]
Equity Interests		53
Net income / (loss)		2,448
Distributions		(1,957)
Ending Balance at Jun. 30, 2021		285,603
Beginning Balance at Mar. 31, 2021			1,118	7,618,128	(1,631,044)	4,033	99,403	6,091,638	6,352,697
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and common OP units, net			40	537,557				537,597	537,597
Conversion of OP units											$ (1)	$ (296)	$ 297	$ 0
Equity interests					53			53	0
Issuance of Series F preferred OP units		$ (24,000)							(24,000)
Share-based compensation - amortization and forfeitures				7,099	74			7,173	7,173
Change in carrying value of temporary equity	(1,220)
Foreign currency translation						1,164	56	1,220	1,220
Other				15	(836)			(821)	(821)
Net income / (loss)	110,770				113,804		4,597	118,401	120,849
Distributions					(96,188)		(3,143)	(99,331)	(101,288)
Ending Balance at Jun. 30, 2021	$ 6,655,824		$ 1,159	$ 8,163,095	$ (1,614,243)	$ 5,197	$ 100,616	$ 6,655,824	$ 6,941,427