Financial Instruments and Risk Management Derivative Recorded Values (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 10, 2016
Derivatives, Fair Value [Line Items]
Interest rate swap, assets	$ 0.0	$ 0.1	$ 0.0
Interest rate swap, liabilities	(3.0)	(5.3)	(12.1)
Cross currency swap, liabilities	(11.8)	0.0	0.0
Hedge [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange contracts, asset	0.2	6.6	2.5
Foreign exchange contracts liabilities	(5.6)	(0.3)	(1.6)
Non-hedge [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange contracts liabilities	$ 0.0	$ 0.0	$ (0.5)