Leases - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) RealEstate Location
Lessee Lease Description [Line Items]
Number of real estate leases | RealEstate	32
Number of service center locations | Location	235
Lessee, operating lease, option to renew, earliest year	2020
Lessee, operating lease, option to renew, latest year	2033
Operating lease, liability, current	$ 10.4
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent
Operating lease, liability, noncurrent	$ 58.6
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent
Operating lease, right-of-use asset	$ 67.8
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent
Operating lease, weighted average remaining lease term	9 years 6 months
Operating lease, weighted average discount rate, percent	4.20%
Operating lease, expense	$ 3.6
Cash paid for amounts included in the measurement of operating leases	$ 3.5
Minimum [Member]
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term	10 years