Schedule III - Real Estate and Accumulated Depreciation - Summary Investment in Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investment in real estate:
Beginning balance	$ 33,670,006	$ 36,027,915	$ 33,590,388
Acquisitions and development	4,805,086	1,174,148	4,807,418
Improvements	282,834	242,147	328,824
Impairment of assets	(51,107)	(135,608)	(28,074)
Dispositions	(1,063,990)	(3,782,120)	(2,673,203)
Foreign currency translation	(37,082)	143,524	187,853
Other	0	0	(185,291)
Ending balance	37,605,747	33,670,006	36,027,915
Accumulated depreciation:
Beginning balance	6,104,297	5,715,459	5,499,958
Depreciation and amortization expenses	1,037,566	1,038,437	1,027,073
Amortization of above market leases	4,036	5,217	5,752
Disposition and other	(234,397)	(684,395)	(772,273)
Foreign currency translation	(1,388)	29,579	(45,051)
Ending balance	6,910,114	$ 6,104,297	$ 5,715,459
Aggregate cost for tax purposes for real property	$ 31,381,486