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		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Net income	$ 232,678	$ 328,040	$ 306,476	$ 388,404
Allocation to Noncontrolling Interests – Operating Partnership	(7,633)	(10,913)	(10,027)	(13,056)
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(944)	(741)	(1,583)	(1,423)
Preferred distributions	(773)	(772)	(1,545)	(1,545)
Net income available to Common Shares	223,328	315,614	293,321	372,380
Numerator for net income per share – diluted	$ 230,961	$ 326,527	$ 303,348	$ 385,436
Weighted average Common Shares outstanding	375,769	373,812	375,640	373,050
OP Units	11,895	12,044	11,891	12,544
Dilutive Securities Options	1,698	1,964	1,863	1,773
ATM forward sales	1		69
Denominator for net income per share – diluted	389,363	387,820	389,463	387,367
Net income per share – basic	$ 0.59	$ 0.84	$ 0.78	$ 1.00
Net income per share – diluted	$ 0.59	$ 0.84	$ 0.78	$ 1.00