Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease term (up to)	10 years		10 years
Option to extend the leases (up to)	5 years		5 years
Rental purchase option asset	$ 21.1		$ 21.1		$ 11.8
Rental purchase option liability	21.1		21.1
Future minimum lease payments for short-term leases	21.9		21.9
Maximum guaranteed residual value	808.8		808.8
Obligations for operating leases not yet commenced	$ 8.0		$ 8.0
Minimum
Lessee, Lease, Description [Line Items]
Lease terms of operating leases not yet commenced	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease terms of operating leases not yet commenced	10 years		10 years
Related Parties
Lessee, Lease, Description [Line Items]
Operating lease term (up to)	5 years		5 years
Lease expense	$ 4.3	$ 4.0	$ 8.7	$ 8.1