Investments in Real Estate - Acquisitions (Details) - 12 months ended Dec. 31, 2023 ft² in Thousands, € in Millions, £ in Millions, $ in Millions	USD ($) ft² property	GBP (£) ft² property	EUR (€) ft² property
Real Estate [Line Items]
Number of properties | property	1,405	1,405	1,405
Leasable square feet (sq ft) | ft²	37,861	37,861	37,861
Investment	$ 8,153.0
Weighted average lease term (years)	15 years 1 month 6 days	15 years 1 month 6 days	15 years 1 month 6 days
Initial weighted average cash lease yield (percent)	7.00%	7.00%	7.00%
Settlement credits as reimbursement for acquired rent free period	$ 4.4
Rental revenue generated from acquisitions from investment grade tenants (as a percent)	31.40%	31.40%	31.40%
Retail
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	88.70%	88.70%	88.70%
Industrial
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	8.50%	8.50%	8.50%
Other Property
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	2.80%	2.80%	2.80%
New properties
Real Estate [Line Items]
Number of properties, new | property	1,015	1,015	1,015
Leasable square feet (sq ft) | ft²	29,767	29,767	29,767
Investment	$ 6,882.7
Weighted average lease term (years)	14 years 10 months 24 days	14 years 10 months 24 days	14 years 10 months 24 days
Initial weighted average cash lease yield (percent)	7.00%	7.00%	7.00%
New properties | U.S.
Real Estate [Line Items]
Number of properties, new | property	838	838	838
Leasable square feet (sq ft) | ft²	15,030	15,030	15,030
Investment	$ 3,802.3
Weighted average lease term (years)	15 years 10 months 24 days	15 years 10 months 24 days	15 years 10 months 24 days
Initial weighted average cash lease yield (percent)	6.90%	6.90%	6.90%
New properties | Europe (UK)
Real Estate [Line Items]
Number of properties, new | property	177	177	177
Leasable square feet (sq ft) | ft²	14,737	14,737	14,737
Investment	$ 3,080.4
Weighted average lease term (years)	13 years 8 months 12 days	13 years 8 months 12 days	13 years 8 months 12 days
Initial weighted average cash lease yield (percent)	7.10%	7.10%	7.10%
Properties under development
Real Estate [Line Items]
Number of properties, under development | property	390	390	390
Leasable square feet (sq ft) | ft²	8,094	8,094	8,094
Investment	$ 1,270.3
Weighted average lease term (years)	16 years 4 months 24 days	16 years 4 months 24 days	16 years 4 months 24 days
Initial weighted average cash lease yield (percent)	6.80%	6.80%	6.80%
Properties under development | U.K.
Real Estate [Line Items]
Investment | £		£ 34.3
Properties under development | Spain
Real Estate [Line Items]
Investment | €			€ 29.3