Investments in Real Estate - Schedule of Allocation of Acquisitions (Details) € in Millions, £ in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2025 GBP (£)	Jun. 30, 2025 EUR (€)
Real Estate [Abstract]
Land	$ 78.4	£ 178.3	€ 85.7
Buildings and improvements	357.2	241.1	549.6
Lease intangible assets	51.9	67.0	63.6
Other assets	7.3	63.3	9.4
Lease intangible liabilities	(12.3)	(5.7)	(23.1)
Other liabilities	0.0	0.0	(0.2)
Total	$ 482.5	£ 544.0	€ 685.0
Weighted average amortization period for acquired lease intangible assets (in years)	7 years 7 months 6 days	7 years 7 months 6 days	7 years 7 months 6 days
Allocated to other assets, financing receivables with above-market terms	$ 7.3		€ 1.7
Allocated to other assets, finance lease right-of-use assets | £		£ 63.3
Allocated to other assets, ground leases			€ 7.7
Weighted average amortization period for acquired lease intangible liabilities (in years)	12 years 7 months 6 days	12 years 7 months 6 days	12 years 7 months 6 days
Lease liabilities under ground leases			€ (0.2)