Long-Term Debt - Schedule of Long-Term Debt Instruments (Details) £ in Millions, $ in Millions, $ in Millions	Dec. 31, 2022 USD ($)	Dec. 31, 2022 GBP (£)	Dec. 31, 2022 AUD ($)	Dec. 31, 2021 USD ($)
Debt Instrument
Total long-term debt	$ 1,622.1			$ 1,474.0
Less: current portion	(75.2)			(82.0)
Net long-term debt	1,546.9			1,392.0
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	24.2	£ 20.0		0.0
U.K. credit agreement — overdraft line of credit
Debt Instrument
Total long-term debt	0.0			0.0
3.50% senior subordinated notes due 2025
Debt Instrument
Total long-term debt	$ 546.2			544.7
Interest rate	3.50%	3.50%	3.50%
3.75% senior subordinated notes due 2029
Debt Instrument
Total long-term debt	$ 495.1			494.3
Interest rate	3.75%	3.75%	3.75%
Australia capital loan agreement
Debt Instrument
Total long-term debt	$ 0.0			26.6
Australia working capital loan agreement
Debt Instrument
Total long-term debt	0.0			0.0
Australia credit agreement
Debt Instrument
Total long-term debt	21.6		$ 31.7	0.0
Mortgage facilities
Debt Instrument
Total long-term debt	494.3			353.8
Other
Debt Instrument
Total long-term debt	$ 40.7			$ 54.6