Leases (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) option	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) option	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Options for renewal | option	1		1
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	$ 108.5		$ 108.5		$ 107.2
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses		Accrued expenses		Accrued expenses
Current lease liabilities	$ 18.6		$ 18.6		$ 17.6
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities		Other noncurrent liabilities		Other noncurrent liabilities
Noncurrent lease liabilities	$ 94.2		$ 94.2		$ 93.4
Total lease liabilities	112.8		112.8		111.0
Lease, Cost [Abstract]
Operating lease cost	9.0	$ 7.1	16.4	$ 14.5
Variable lease cost	0.8	0.6	1.2	1.2
Total lease expense	9.8	$ 7.7	17.6	15.7
Cash paid for amounts included in the measurement of operating lease liabilities			16.9	13.6
Right-of-use assets obtained in exchange for new operating lease liabilities			9.3	$ 6.2
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2022 (excluding the six months ended June 30, 2022)	10.7		10.7
2023	20.5		20.5
2024	17.7		17.7
2025	16.0		16.0
2026	13.8		13.8
Thereafter	49.6		49.6
Total lease payments	128.3		128.3
Less: Imputed interest	(15.5)		(15.5)
Building
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	103.2		103.2		101.0
Equipment
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	$ 5.3		$ 5.3		$ 6.2
Building and Equipment
Lease, Cost [Abstract]
Weighted-average remaining lease term (years): Operating leases	7 years 11 months 1 day		7 years 11 months 1 day		8 years 6 months
Weighted-average discount rate: Operating leases	3.19%		3.19%		3.27%
Vehicles
Lease, Cost [Abstract]
Weighted-average remaining lease term (years): Operating leases	2 years 2 months 15 days		2 years 2 months 15 days		2 years 4 months 2 days
Weighted-average discount rate: Operating leases	1.06%		1.06%		1.08%