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Real Estate (Summary of Real Estate Subject to Operating Leases) (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |  |
Land and improvements | [1] | $ 2,878,400,000 | $ 2,669,498,000
Buildings and improvements |  | 7,368,873,000 | 6,985,394,000
Leasehold interests |  | 355,000 | 355,000
Real estate subject to operating leases, gross |  | 10,247,628,000 | 9,655,247,000
Less accumulated depreciation and amortization |  | (1,863,451,000) | (1,660,308,000)
Real estate subject to operating leases, net, before work in process |  | 8,384,177,000 | 7,994,939,000
Real Estate, Held-for-Sale |  | 1 |
Work in progress – improvements |  | 144,068,000 | 21,737,000
Accounted for using the operating method |  | 8,528,245,000 | 8,016,676,000
Accounted for using the direct financing method |  | 3,033,000 | 3,352,000
Classified as held for sale | [2] | 4,573,000 | 786,000
Accounted for using the operating method, net of accumulated depreciation and amortization |  | 8,535,851,000 | 8,020,814,000
Asset under construction |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Land and improvements |  | $ 96,464,000 | $ 22,356,000
[1] | Includes $96,464 and $22,356 in land for Properties under construction as of December 31, 2023 and 2022, respectively.
[2] | As of December 31, 2023, one P roperty was classified as held for sale. The two properties classified as held for sale as of December 31, 2022 were sold during the year ended December 31, 2023.

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- Definition Amount, before allowance for credit loss, of net investment in direct financing lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-14 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479773/842-30-50-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7A -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-7A + Details
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