Leases - Additional Information (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Renewal term	5 years	5 years
Termination period		1 year
Operating lease expense	$ 6.4	$ 12.7
Variable lease cost	$ 2.0	$ 3.2
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms		1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms		13 years