Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Leases
Operating lease cost	$ 25.2	$ 23.6
Cash payments for operating leases	25.3	23.5
Right-of-use assets obtained in exchange for operating lease obligations	$ 28.2	$ 15.6
Weighted average remaining lease term - operating leases	6 years 3 months 18 days		5 years 9 months 18 days
Weighted average discount rate - operating leases	4.50%		4.30%
Maturities of operating lease liabilities
2024 (remaining nine months)	$ 50.2
2025	55.3
2026	42.3
2027	32.1
2028	24.7
Thereafter	67.6
Total operating lease payments	272.2
Less: imputed interest	(38.1)
Total operating lease liabilities	$ 234.1