Revenues Contract Balances (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Trade Receivable, net	$ 117.2	$ 139.2
Contracts with Customers, Asset, Gross, Noncurrent	1.5	0.0
Contract Liability Beginning Balance	9.2	1.9
Cumulative effect adjustment from the implementation of ASC 606		6.4
Revenues recognized that were included in the contract liability balance at the beginning of the period	(2.1)	(3.2)
Increases due to cash received, excluding amounts recognized as revenues during the period	4.7	4.1
Contract Liability Ending Balance	$ 11.8	$ 9.2