Other Expense Other (Income) Development and Licensing Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Jun. 30, 2013
Development and licensing income [Line Items]
Development and licensing income	$ 0.2	$ 0.4
Deferred income	22.1		$ 33.6
SmartDose [Member]
Development and licensing income [Line Items]
Development and licensing income	$ 0.2	$ 0.4
Deferred income				$ 20.0