CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Total Stockholders' Equity	Non-Controlling Interests
Beginning Balance at Dec. 31, 2018	$ 8,369,186	$ 5,206	$ 8,629,462	$ (392,594)	$ (12,963)	$ 8,229,111	$ 140,075
Beginning Balance, common stock, shares outstanding (in shares) at Dec. 31, 2018		520,647,977
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital distributions	(2,610)						(2,610)
Net income	$ 94,557			93,471		93,471	1,086
Dividends declared per common share	$ 0.39
Dividends and dividend equivalents declared	$ (206,764)			(206,764)		(206,764)
Issuance of common stock — settlement of RSUs, net of tax	(8,164)	$ 9	(8,173)			(8,164)
Issuance of common stock — settlement of RSUs, net of tax (in shares)		910,452
Stock Issued During Period, Value, Conversion of Convertible Securities	229,944	$ 126	229,818			229,944
Stock Issued During Period, Shares, Conversion of Convertible Securities		12,553,864
Issuance of common stock, net (in shares)		671,020
Stock Issued During Period, Value, New Issues	17,737	$ 7	17,730			17,737
Share-based compensation expense	13,847		12,930			12,930	917
Total other comprehensive income	(331,222)				(327,182)	(327,182)	(4,040)
Redemption of OP Units for common stock	0	$ 36	56,720		(579)	56,177	56,177
Redemption of OP Units for common stock (in shares)		3,573,293
Ending Balance at Sep. 30, 2019	8,176,511	$ 5,384	8,938,487	(505,887)	(340,724)	8,097,260	79,251
Ending Balance, common stock, shares outstanding (in shares) at Sep. 30, 2019		538,356,606
Beginning Balance at Jun. 30, 2019	8,037,468	$ 5,251	8,686,927	(469,129)	(265,370)	7,957,679	79,789
Beginning Balance, common stock, shares outstanding (in shares) at Jun. 30, 2019		525,126,947
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital distributions	(724)						(724)
Net income	$ 33,983			33,707		33,707	276
Dividends declared per common share	$ 0.13
Dividends and dividend equivalents declared	$ (70,465)			(70,465)		(70,465)
Issuance of common stock — settlement of RSUs, net of tax	(56)	$ 0	(56)			(56)
Issuance of common stock — settlement of RSUs, net of tax (in shares)		4,775
Stock Issued During Period, Value, Conversion of Convertible Securities	229,944	$ 126	229,818			229,944
Stock Issued During Period, Shares, Conversion of Convertible Securities		12,553,864
Issuance of common stock, net (in shares)		671,020
Stock Issued During Period, Value, New Issues	17,737	$ 7	17,730			17,737
Share-based compensation expense	4,625		4,068			4,068	557
Total other comprehensive income	(76,001)				(75,354)	(75,354)	(647)
Ending Balance at Sep. 30, 2019	8,176,511	$ 5,384	8,938,487	(505,887)	(340,724)	8,097,260	79,251
Ending Balance, common stock, shares outstanding (in shares) at Sep. 30, 2019		538,356,606
Beginning Balance at Dec. 31, 2019	$ 8,266,078	$ 5,416	9,010,194	(524,588)	(276,600)	8,214,422	51,656
Beginning Balance, common stock, shares outstanding (in shares) at Dec. 31, 2019	541,642,725	541,642,725
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital distributions	$ (1,603)						(1,603)
Net income	$ 126,319			125,513		125,513	806
Dividends declared per common share	$ 0.45
Dividends and dividend equivalents declared	$ (247,875)			(247,875)		(247,875)
Issuance of common stock — settlement of RSUs, net of tax	$ (3,373)	$ 3	(3,376)			(3,373)
Issuance of common stock — settlement of RSUs, net of tax (in shares)		328,841
Issuance of common stock, net (in shares)	18,891,307	18,562,466
Stock Issued During Period, Value, New Issues	$ 503,798	$ 186	503,612			503,798
Share-based compensation expense	12,293		10,749			10,749	1,544
Total other comprehensive income	(324,260)				(322,366)	(322,366)	(1,894)
Ending Balance at Sep. 30, 2020	$ 8,331,377	$ 5,605	9,521,179	(646,950)	(598,966)	8,280,868	50,509
Ending Balance, common stock, shares outstanding (in shares) at Sep. 30, 2020	560,534,032	560,534,032
Beginning Balance at Jun. 30, 2020	$ 8,343,873	$ 5,605	9,515,625	(595,318)	(632,148)	8,293,764	50,109
Beginning Balance, common stock, shares outstanding (in shares) at Jun. 30, 2020		560,532,679
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital distributions	(535)						(535)
Net income	$ 32,865			32,654		32,654	211
Dividends declared per common share	$ 0.15
Dividends and dividend equivalents declared	$ (84,286)			(84,286)		(84,286)
Issuance of common stock — settlement of RSUs, net of tax	$ (12)		(12)			(12)
Issuance of common stock, net (in shares)	1,353	1,353
Stock Issued During Period, Value, New Issues			5,566
Share-based compensation expense	$ 6,086					5,566	520
Total other comprehensive income	33,386				33,182	33,182	204
Ending Balance at Sep. 30, 2020	$ 8,331,377	$ 5,605	$ 9,521,179	$ (646,950)	$ (598,966)	$ 8,280,868	$ 50,509
Ending Balance, common stock, shares outstanding (in shares) at Sep. 30, 2020	560,534,032	560,534,032