Segment and Geographic Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segment			1
Number of Reportable Segments | segment			1
Operating Revenues	$ 1,139,322,000	$ 1,093,188,000	$ 2,266,644,000	$ 2,183,579,000
Investments in Properties, net	22,742,938,000		22,742,938,000		$ 22,569,930,000
Operating lease right-of-use assets, net	1,310,970,000		1,310,970,000		1,405,441,000
Net Assets in Foreign Operations	2,990,500,000		2,990,500,000		3,865,400,000
Outside the United States
Segment Reporting Information [Line Items]
Operating Revenues	459,700,000	$ 406,800,000	921,800,000	$ 806,300,000
Investments in Properties, net	9,602,500,000		9,602,500,000		9,594,300,000
Operating lease right-of-use assets, net	$ 618,400,000		618,400,000		686,400,000
Outside the United States | Revenue | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Operating Revenues			40.7
Concentration risk	40.30%	37.20%		36.90%
United States
Segment Reporting Information [Line Items]
Operating Revenues	$ 679,700,000	$ 686,400,000	1,344,800,000	$ 1,377,300,000
Investments in Properties, net	11,197,900,000		11,197,900,000		11,167,900,000
Operating lease right-of-use assets, net	$ 692,600,000		$ 692,600,000		$ 719,100,000