Revenue - Contracts and Liabilities, Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2013
Disaggregation of Revenue [Line Items]
Revenue recognized that was included in the deferred income balance	$ 19.8
Deferred income	40.4	$ 34.9
SmartDose
Disaggregation of Revenue [Line Items]
Deferred income	5.2		$ 20.0
Deferred income, current	0.9
Deferred income, noncurrent	$ 4.3