Net Income Available to Common Stockholders Per Share of the Company (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2014
Numerator:
Income from continuing operations									$ 303,798	$ 238,604	$ 59,313
Income from continuing operations attributable to noncontrolling interests									(10,010)	(4,523)	(966)
Preferred dividends and distributions	$ (3,312)	$ (3,313)	$ (3,312)	$ (3,313)	$ (3,312)	$ (3,313)	$ (3,312)	$ (3,313)	(13,250)	(13,250)	(13,250)
Allocation to participating securities (1)									(3,839)	(1,634)	(1,699)
Numerator for basic and diluted income from continuing operations available to common stockholders									276,699	219,197	43,398
Income from discontinued operations (2)									0	0	124,495
Income from discontinued operations attributable to noncontrolling common units of the Operating Partnership (2)									0	0	(2,623)
Numerator for basic and diluted net income available to common stockholders									$ 276,699	$ 219,197	$ 165,270
Denominator:
Basic weighted average vested shares outstanding									92,342,483	89,854,096	83,090,235
Effect of dilutive securities – contingently issuable shares and stock options									680,551	541,679	1,877,485
Diluted weighted average vested shares and common stock equivalents outstanding									93,023,034	90,395,775	84,967,720
Basic earnings per share:
Income (loss) from continuing operations available to common stockholders per share (dollars per share)									$ 3.00	$ 2.44	$ 0.52
Income from discontinued operations per share of common stock (dollars per share)									0.00	0.00	1.47
Net income available to common stockholders per share (dollars per share)	$ 0.29	$ 0.54	$ 0.32	$ 1.85	$ 0.27	$ 1.10	$ 0.61	$ 0.45	3.00	2.44	1.99
Diluted earnings per share:
Income (loss) from continuing operations available to common stockholders per share (dollars per share)									2.97	2.42	0.51
Income from discontinued operations per share of common stock (dollars per share)									0.00	0.00	1.44
Net income available to common stockholders per share (dollars per share)	$ 0.29	$ 0.54	$ 0.31	$ 1.84	$ 0.27	$ 1.09	$ 0.61	$ 0.45	$ 2.97	$ 2.42	$ 1.95
Exchangeable debt [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stated interest rate												4.25%