Earnings Per Share and Earnings Per Unit - Computation of Net Income per Unit Basic and Net Income per Unit Diluted for Operating Partnership (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net income	$ 335,165	$ 447,332	$ 641,641	$ 835,736
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	$ (1,143)	$ (534)	$ (2,726)	$ (1,957)
Dilutive Securities Options	1,555	2,047	1,785	1,801
ATM forward sales			6
Denominator for net income per share – diluted	389,300	388,374	389,394	387,642
Net income per share - basic	$ 0.86	$ 1.15	$ 1.64	$ 2.15
Net income per share - diluted	$ 0.86	$ 1.15	$ 1.63	$ 2.14
ERPOP [Member]
Net income	$ 335,165	$ 447,332	$ 641,641	$ 835,736
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties	(1,143)	(534)	(2,726)	(1,957)
Allocation to Preference Units	(773)	(773)	(2,318)	(2,318)
Numerator for net income per Unit – basic and diluted	$ 333,249	$ 446,025	$ 636,597	$ 831,461
Denominator for net income per Unit – basic	387,745	386,327	387,603	385,841
Dilutive Securities Options	1,555	2,047	1,785	1,801
ATM forward sales		0	6	0
Denominator for net income per share – diluted	389,300	388,374	389,394	387,642
Net income per share - basic	$ 0.86	$ 1.15	$ 1.64	$ 2.15
Net income per share - diluted	$ 0.86	$ 1.15	$ 1.63	$ 2.14