Schedule III Part II - Summary of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2019
January 1, 2019 adoption of new accounting standard - See Note 2				$ (71,859)
January 1, 2019 adoption of new accounting standard - See Note 2				(18,173)
Real Estate and Accumulated Depreciation, Carrying Amount of Land and Buildings and Improvements [Abstract]
Balance at beginning of year	$ 8,582,870		$ 8,298,132	7,819,472
Acquisitions	519,350		39,440	309,921
Improvements	424,521		473,679	441,703
Impairment of property			(68,484)
Deduction during period—dispositions and retirements of property	(104,679)		(159,897)	(201,105)
Balance at end of year	9,422,062	[1]	8,582,870	8,298,132
Aggregate cost basis for Federal tax purposes	8,400,000
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at beginning of year	2,357,692		2,215,413	2,059,143
Additions during period—depreciation and amortization expense	246,338		229,199	215,382
Deductions during period—dispositions and retirements of property	(72,935)		(75,289)	(40,939)
Real estate accumulated depreciation impairment of property			(11,631)
Balance at end of year	$ 2,531,095		$ 2,357,692	$ 2,215,413

[1] For Federal tax purposes, the aggregate cost basis is approximately $8.4 billion as of December 31, 2021.