Long-Term Debt - Schedule of Long-Term Debt Instruments (Details) £ in Millions, $ in Millions	Dec. 31, 2024 USD ($)	Dec. 31, 2024 GBP (£)	Dec. 31, 2023 USD ($)
Debt Instrument
Total long-term debt	$ 1,852.0		$ 1,629.2
Less: current portion	(721.2)		(209.7)
Net long-term debt	1,130.8		1,419.5
U.S. credit agreement — revolving credit line
Debt Instrument
Total long-term debt	0.0		0.0
U.K. credit agreement — revolving credit line
Debt Instrument
Total long-term debt	$ 171.4	£ 137.0	$ 0.0
3.50% senior subordinated notes due 2025
Debt Instrument
Interest rate	3.50%	3.50%	3.50%
Total long-term debt	$ 549.1		$ 547.7
3.75% senior subordinated notes due 2029
Debt Instrument
Interest rate	3.75%	3.75%	3.75%
Total long-term debt	$ 496.6		$ 495.8
Mortgage facilities
Debt Instrument
Total long-term debt	474.8		402.1
Other debt
Debt Instrument
Total long-term debt	$ 160.1		$ 183.6