Condensed Consolidated Statement of Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Dividends in Excess of Earnings	Accumulated Other Comprehensive Loss, Net	Total Stockholders’ Equity	Noncontrolling Interests in Operating Partnership	Noncontrolling Interests in Consolidated Joint Ventures	Total Noncontrolling Interests	Series E Preferred Units Preferred Stock
Balance at Dec. 31, 2015	$ 4,536,502	$ 1,290,135	$ 1,456	$ 4,655,220	$ (1,350,089)	$ (96,590)	$ 4,500,132	$ 29,612	$ 6,758	$ 36,370
Balance (shares) at Dec. 31, 2015			146,384,247
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of units to common stock			$ 4	4,045			4,049	(4,049)		(4,049)
Conversion of units to common stock (shares)			339,146
Issuance of unvested restricted stock, net of forfeitures (shares)			119,122
Issuance of common stock, net of offering costs	1,086,091		$ 120	1,085,971			1,086,091
Issuance of common stock, net of offering costs (shares)			12,000,000
Exercise of stock options	$ 1,380			1,380			1,380
Exercise of stock options (shares)	33,948		33,948
Shares issued under employee stock purchase plan	$ 3,349		$ 1	3,348			3,349
Shares issued under employee stock purchase plan (shares)			50,348
Preferred stock offering costs	(2)	(2)					(2)
Redemption of series E preferred stock	(287,500)				(10,328)		(287,500)
Redemption of series E preferred stock (shares)											(277,172,000)
Amortization of share-based compensation	18,496			18,496			18,496
Reclassification of vested share-based awards				(9,122)			(9,122)	9,122		9,122
Dividends declared on preferred stock	(66,378)				(66,378)		(66,378)
Dividends and distributions on common stock and common and incentive units	(394,695)				(387,537)		(387,537)	(7,158)		(7,158)
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	(375)								(375)	(375)
Net income	335,712				331,112		331,112	4,144	456	4,600
Other comprehensive income—foreign currency translation adjustments	(37,388)					(36,789)	(36,789)	(599)		(599)
Other comprehensive loss—fair value of interest rate swaps	(2,113)					(2,071)	(2,071)	(42)		(42)
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense	3,569					3,511	3,511	58		58
Balance at Sep. 30, 2016	$ 5,196,648	$ 1,012,961	$ 1,581	$ 5,759,338	$ (1,483,220)	$ (131,939)	$ 5,158,721	$ 31,088	$ 6,839	$ 37,927
Balance (shares) at Sep. 30, 2016			158,926,811