Real Estate Portfolio - Schedule of Components of Direct Financing and Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Real Estate [Abstract]
Income from sales-type and direct financing leases, excluding contingent rent	$ 289,574	$ 224,252
Income from operating leases	0	10,913
Income from lease financing receivables	59,892	12,020
Total revenue, excluding contingent rent	349,466	247,185
Contingent rent	572	0
Total lease revenue	350,038	247,185
Non-cash adjustment	(27,877)	3,254
Total contractual lease revenue	$ 322,161	$ 250,439

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919372-209981

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121561866&loc=SL77919311-209978

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=121640914&loc=SL77927221-108306

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