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	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 1,396,714	$ 962,501	$ 1,009,708
Allocation to Noncontrolling Interests – Operating Partnership	(45,900)	(34,010)	(36,034)
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(17,964)	(14,855)	(3,297)
Preferred distributions	(3,090)	(3,090)	(3,090)
Net income available to Common Shares	1,329,760	910,546	967,287
Numerator for net income per share – diluted	$ 1,375,660	$ 944,556	$ 1,003,321
Weighted average Common Shares outstanding	373,833	371,791	370,461
OP Units	12,263	13,003	12,907
Dilutive Securities Options	1,924	1,080	2,965
ATM forward sales	69
Denominator for net income per share – diluted	388,089	385,874	386,333
Net income per share – basic	$ 3.56	$ 2.45	$ 2.61
Net income per share – diluted	$ 3.54	$ 2.45	$ 2.60