Contracts and Liabilities (Details) - USD ($) $ in Millions		9 Months Ended
	Jan. 01, 2018	Sep. 30, 2018	Dec. 31, 2017
Contract assets, December 31, 2017	$ 7.5	$ 7.5
Contract assets, September 30, 2018		7.6
Change in contract assets - increase (decrease)		0.1
Deferred income, December 31, 2017	(33.6)	(33.6)
Deferred income, September 30, 2018		(30.0)
Change in deferred income - decrease (increase)		3.6
Revenue recognized that was included in the deferred income balance		67.0
Cumulative catch-up adjustment to revenue	34.5
Retained Earnings (Accumulated Deficit)	1,189.6	$ 1,312.7	$ 1,178.2
Receipt of advance cash payment		62.3
Other adjustments		1.1
SmartDose [Member]
Deferred income, September 30, 2018		$ (6.7)
Deferred income, current		0.9
Deferred income, noncurrent		5.8
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Cumulative catch-up adjustment to revenue	18.6
Retained Earnings (Accumulated Deficit)	$ 11.4	$ 8.7