Leases - Summary of Lease Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 3.8	$ 3.4
Variable Lease, Cost	0.1	0.1
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	3.7	3.6
ROU asset obtained in exchange for new operating lease liabilities	$ 70.7	$ 49.9