Leases - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) property	Sep. 30, 2018 USD ($)
Lessee, Lease, Description [Line Items]
Lease cost	$ 5.0	$ 5.2	$ 17.1	$ 18.2
Number of leased properties | property			3
Lease income	$ 0.7	$ 0.7	$ 2.2	$ 2.2
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 year		1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	14 years		14 years