Segment and Geographic Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segment	1
Number of Reportable Segments | segment	1
Operating Revenues	$ 4,427,882	$ 3,903,609	$ 3,209,241
Investments in Real Estate	22,569,930	21,731,112
Outside the United States
Segment Reporting Information [Line Items]
Operating Revenues	1,700,000	1,300,000	$ 600,000
Investments in Real Estate	9,600,000	9,300,000
Net Assets in Foreign Operations	$ 3,900,000	$ 5,700,000
Outside the United States | Revenue | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk	37.50%	33.30%	19.50%
United States
Segment Reporting Information [Line Items]
Operating Revenues	$ 2,800,000	$ 2,600,000	$ 2,600,000
Investments in Real Estate	$ 11,200,000	$ 11,300,000