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Real Estate Investments (Details) $ in Thousands, ft² in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) ft² property site state item	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) ft² property	Nov. 18, 2014 USD ($)
Real Estate Investments
Number of Real Estate Properties | property	1,510		1,404
Land Subject to Ground Leases | ft²	31.0		29.1
Net Real Estate Investments	$ 4,731,698		$ 4,367,111
Retail Net Lease Assets Purchased | item	106
Payments to Acquire Property, Plant, and Equipment	$ 409,800
Number Of States Properties Located | state	32
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (in year)	9 years 2 months 12 days
Payments to Acquire Land Held-for-use	$ 99,800
Payments for Capital Improvements	249,200
Reimbursement Agreement, Debt Covenant, Assets Value				$ 14,000
Payments to Acquire Intangible Assets	$ 60,800
Number Of Development And Partner Capital Solutions Projects Commenced | site	15
Number of Development and Partner Capital Solutions Projects Construction | site	17
Number of properties sold | property	1
Proceeds from Sale of Real Estate	$ 7,600
Gains on Sales of Investment Real Estate	2,300
Provision for impairment	1,015	$ 0
Impaired Real Estate Estate Fair Value	$ 1,800

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