Other Expense (Income) - Development and Licensing Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jun. 30, 2013
Development and licensing income [Line Items]
Development and licensing income	$ 0.2	$ 0.2	$ 0.6	$ 0.6
Deferred income	56.7		56.7		$ 34.9
SmartDose
Development and licensing income [Line Items]
Deferred income	5.0		5.0			$ 20.0
SmartDose
Development and licensing income [Line Items]
Development and licensing income	$ 0.2	$ 0.2	$ 0.6	$ 0.6