Real Estate (Summary of Real Estate Subject to Operating Leases) (Details) - USD ($)		Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Land and improvements	[1]	$ 2,823,053,000	$ 2,669,498,000
Buildings and improvements		7,226,852,000	6,985,394,000
Leasehold interests		355,000	355,000
Real estate subject to operating leases, gross		10,050,260,000	9,655,247,000
Less accumulated depreciation and amortization		(1,813,920,000)	(1,660,308,000)
Real estate subject to operating leases, net, before work in progress		8,236,340,000	7,994,939,000
Work in progress and improvements		106,615,000	21,737,000
Accounted for using the operating method		8,342,955,000	8,016,676,000
Accounted for using the direct financing method		3,107,000	3,352,000
Classified as held for sale	[2]	0	786,000
Properties as held for sale		0
Accounted for using the operating method, net of accumulated depreciation and amortization		8,346,062,000	8,020,814,000
Asset under construction
Property, Plant and Equipment [Line Items]
Land and improvements		$ 100,788,000	$ 22,356,000

[1] (1) Includes $100,788 and $22,356 in land for Properties under construction at September 30, 2023 and December 31, 2022, respectively.

[2] (2) As of September 30, 2023, no Properties were classified as held for sale.