Leases - Lease Liability Maturity (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2020 (excluding the three months ended March 31, 2020)	$ 10.8
2020	13.3
2021	9.2
2022	11.1
2023	10.1
Thereafter	93.6
Total lease payments	148.1
Less imputed interest	(28.8)
Total	$ 119.3	$ 42.5