Investments in Real Estate - Schedule of Allocation of Acquisitions (Details) € in Millions, £ in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2025 GBP (£)	Sep. 30, 2025 EUR (€)
Real Estate [Abstract]
Land	$ 119.5	£ 302.3	€ 103.9
Buildings and improvements	599.1	424.5	569.9
Lease intangible assets	115.2	109.4	65.9
Other assets	12.1	92.4	7.7
Lease intangible liabilities	(24.3)	(8.0)	(14.8)
Other liabilities	(5.4)	(3.2)	(2.0)
Total	$ 816.2	£ 917.4	€ 730.6
Weighted average amortization period for acquired lease intangible assets (in years)	8 years 4 months 24 days	8 years 4 months 24 days	8 years 4 months 24 days
Allocated to other assets, financing receivables with above-market terms	$ 7.3	£ 3.0
Allocated to other assets, finance lease right-of-use assets	$ 4.8	88.5
Allocated to other assets, ground leases		£ 0.9	€ 7.7
Weighted average amortization period for acquired lease intangible liabilities (in years)	13 years 9 months 18 days	13 years 9 months 18 days	13 years 9 months 18 days
Lease liabilities under finance leases	$ 5.4	£ 2.2
Lease liabilities under ground leases | £		£ 0.7
Deferred rent on below market leases | €			€ 1.8