Investments - Summary of Gross Investment Activity (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($) investmentLocation	Sep. 30, 2023 USD ($) investmentLocation	Dec. 31, 2023 USD ($)
Number of Investment Locations
Beginning balance | investmentLocation	1,873	1,653
Acquisitions of and additions to real estate investments | investmentLocation	190	199
Sales of investments in real estate | investmentLocation	(22)	(42)
Relinquishment of properties at end of ground lease term | investmentLocation	(3)	(1)
Investments in loans receivable | investmentLocation	29	1
Principal collections on and settlements of loans and direct financing lease receivables | investmentLocation	(14)	(17)
Ending balance | investmentLocation	2,053	1,793
Dollar Amount of Investments
Beginning balance	$ 4,915,246	$ 4,055,385
Acquisitions of and additions to real estate investments	782,067	691,079
Sales of investments in real estate	(35,667)	(93,326)
Relinquishment of properties at end of ground lease term	(1,471)	(837)
Provisions for impairment of real estate	(12,259)	(1,645)
Investments in loans and direct financing lease receivables	120,599	10,200
Principal collections on and settlements of loans and direct financing lease receivables	(7,994)	(23,206)
Other	(1,697)	(3,519)
Ending balance	5,758,823	4,634,131
Less: accumulated depreciation and amortization	(450,454)	(343,637)	$ (367,133)
Net investments	$ 5,308,369	$ 4,290,494	$ 4,548,113