Long-Term Debt - Schedule of Long-Term Debt Instruments (Details) £ in Millions, $ in Millions	Mar. 31, 2026 USD ($)	Mar. 31, 2026 GBP (£)	Dec. 31, 2025 USD ($)
Long Term Debt
Total long-term debt	$ 2,636.9		$ 2,165.5
Less: current portion	(423.1)		(355.0)
Net long-term debt	2,213.8		1,810.5
U.S. credit agreement — revolving credit line
Long Term Debt
Total long-term debt	620.0		333.0
U.K. credit agreement — revolving credit line
Long Term Debt
Total long-term debt	$ 43.6	£ 33.0	$ 87.6
3.75% senior subordinated notes due 2029
Debt Instrument [Line Items]
Interest rate	3.75%	3.75%	3.75%
Long Term Debt
Total long-term debt	$ 497.5		$ 497.3
Mortgage facilities
Long Term Debt
Total long-term debt	971.2		792.5
Other debt
Long Term Debt
Total long-term debt	$ 504.6		$ 455.1