Investments in Real Estate - Acquisitions (Details) ft² in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) ft² property	Sep. 30, 2021 USD ($) ft² property
Real Estate [Line Items]
Number of properties | property	766	536
Leasable square feet (sq ft) | ft²	21,501	16,571
Investment	$ 5,098,600	$ 3,775,900
Weighted average lease term (years)	12 years 8 months 12 days	12 years 7 months 6 days
Initial weighted average cash lease yield (percent)	5.80%	5.50%
Settlement credits as reimbursement for acquired rent free period	$ 8,000	$ 3,200
Rental revenue generated from acquisitions from investment grade tenants (as a percent)	30.00%	43.00%
Retail
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	90.60%	80.20%
Industrial
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	9.30%	19.80%
New properties
Real Estate [Line Items]
Number of properties, new | property	639	486
Leasable square feet (sq ft) | ft²	18,300	14,444
Investment	$ 4,682,200	$ 3,593,900
Weighted average lease term (years)	12 years 6 months	12 years 4 months 24 days
Initial weighted average cash lease yield (percent)	5.90%	5.50%
New properties | U.S.
Real Estate [Line Items]
Number of properties, new | property	561	415
Leasable square feet (sq ft) | ft²	9,396	9,227
Investment	$ 2,623,600	$ 2,073,100
Weighted average lease term (years)	15 years 1 month 6 days	13 years 9 months 18 days
Initial weighted average cash lease yield (percent)	5.90%	5.50%
New properties | Europe (UK)
Real Estate [Line Items]
Number of properties, new | property	78	71
Leasable square feet (sq ft) | ft²	8,904	5,217
Investment	$ 2,058,600	$ 1,520,800
Weighted average lease term (years)	8 years 10 months 24 days	10 years 6 months
Initial weighted average cash lease yield (percent)	5.80%	5.50%
Properties under development
Real Estate [Line Items]
Number of properties, under development | property	127	50
Leasable square feet (sq ft) | ft²	3,201	2,127
Investment	$ 416,400	$ 182,000
Weighted average lease term (years)	15 years 7 months 6 days	15 years 9 months 18 days
Initial weighted average cash lease yield (percent)	5.60%	5.90%