Basis of Presentation - Variable Interest Entity Disclosure (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Assets
Land, buildings and improvements		$ 12,031,896	$ 11,875,407
Net investments in direct financing leases and loans receivable		787,674	813,577
In-place lease intangible assets and other		2,397,121	2,386,000
Above-market rent intangible assets		837,792	843,410
Accumulated depreciation and amortization		(2,986,676)	(2,889,294)
Total assets	[1]	15,569,532	15,480,630
Liabilities
Non-recourse mortgages, net		351,175	368,524
Below-market rent and other intangible liabilities, net		181,236	183,286
Total liabilities	[1]	7,874,871	7,897,179
Variable Interest Entity
Assets
Land, buildings and improvements		428,927	426,831
Net investments in direct financing leases and loans receivable		144,103	144,103
In-place lease intangible assets and other		42,873	42,884
Above-market rent intangible assets		26,720	26,720
Accumulated depreciation and amortization		(158,569)	(154,413)
Total assets		502,314	500,884
Liabilities
Non-recourse mortgages, net		1,383	1,485
Below-market rent and other intangible liabilities, net		20,140	20,568
Total liabilities		$ 45,464	$ 46,302

[1] See Note 2 for details related to variable interest entities (“VIEs”).