Leases, Schedule of Lease Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease assets	$ 28.8	$ 25.8
Finance lease assets	6.3	6.6
Total lease assets	35.1	32.4
Operating lease liabilities, current	4.5	3.9
Finance lease liabilities, current	1.2	1.2
Operating lease liabilities, noncurrent	27.8	25.2
Finance lease liabilities, noncurrent	5.1	5.4
Total lease liabilities	$ 38.6	$ 35.7