Schedule III - Real Estate and Accumulated Depreciation - Notes to Schedule III (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Real Estate
Balance at beginning of period	$ 7,714,382	$ 7,370,401	$ 7,158,069
Additions during the period:
Acquisitions	0	723,694	286,252
Improvements and other capitalized costs	436,201	280,823	323,919
Total Additions	436,201	1,004,517	610,171
Deductions during the period:
Cost of real estate sold	0	(552,201)	(383,010)
Write off of fully depreciated assets	(62,737)	(108,335)	0
Total Deductions	(62,737)	(660,536)	(383,010)
Total	8,087,846	7,714,382	7,385,230
Cumulative impairment charges on real estate assets owned at end of period	0	0	(14,829)
Balance at end of period	8,087,846	7,714,382	7,370,401
Accumulated Depreciation
Balance at beginning of period	874,988	811,196	621,617
Additions during the period:
Depreciation expense	267,411	246,240	234,057
Total Additions	267,411	246,240	234,057
Deductions during the period:
Cost of real estate sold	0	(74,113)	(44,478)
Write off of fully depreciated assets	(62,737)	(108,335)	0
Total Deductions	(62,737)	(182,448)	(44,478)
Balance at end of period before impairment charges	1,079,662	$ 874,988	$ 811,196
Aggregate cost for federal income tax, net of depreciation	$ 5,600,000
Buildings and Improvements | Minimum
Deductions during the period:
Useful life	30 years
Buildings and Improvements | Maximum
Deductions during the period:
Useful life	40 years