Term Loans (Details) € in Millions, £ in Millions, $ in Millions	1 Months Ended
	Jan. 31, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2025 GBP (£)	Sep. 30, 2025 EUR (€)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Secured Debt | $800 Million Term Loan Agreement
Debt
Borrowings	$ 800.0
Secured Debt | $800 Million Term Loan Agreement Due August 2025
Debt
Borrowings	300.0
Secured Debt | $800 Million Term Loan Agreement Due August 2027
Debt
Borrowings	$ 500.0
Secured Debt | $800 Million Term Loan Agreement Due August 2027 | Interest rate swaps
Debt
Derivative, fixed interest rate (as a percent)	3.30%
Secured Debt | Term Loan Due June 2025
Debt
Borrowings	$ 500.0
Multicurrency Unsecured Debt | Unsecured Debt Due January 2024
Debt
Maximum amount of loan						$ 1,500.0
Stated interest rate (as a percent)	4.80%
Face amount of loan		$ 1,100.0
Borrowing rate over applicable benchmark rate (in basis points)		0.0080	0.0080	0.0080
Multicurrency Unsecured Debt | Unsecured Debt Due January 2024 | Term Loans
Debt
Face amount of loan		$ 90.0	£ 705.0	€ 85.0
Senior Unsecured Term Loans
Debt
Deferred finance costs balance		$ 0.7			$ 2.2