Earnings Per Share and Earnings Per Unit - Computation of Net Income per Share Basic and Net Income per Share Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 332,671	$ 109,257
Allocation to Noncontrolling Interests – Operating Partnership	(11,535)	(3,919)
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(12,530)	(799)
Preferred distributions	(773)	(773)
Net income available to Common Shares	307,833	103,766
Numerator for net income per share – diluted	$ 319,368	$ 107,685
Weighted average Common Shares outstanding	371,582	369,558
OP Units	13,004	12,919
Dilutive Securities Options	2,363	2,707
Denominator for net income per share – diluted	386,949	385,184
Net income per share – basic	$ 0.83	$ 0.28
Net income per share – diluted	$ 0.83	$ 0.28