Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Other Charges (Gain), Net - Restructuring Plans (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring charges
Restructuring expenses	$ (6.8)		$ 2.5	$ (1.4)	$ 6.7
Sale of building
Restructuring charges
Restructuring expenses		$ (7.8)		(7.8)
Costs of product revenue
Restructuring charges
Restructuring expenses	0.6		0.5	4.1	0.8
Other charges (gain), net
Restructuring charges
Restructuring expenses	$ (7.4)		$ 2.0	$ (5.5)	$ 5.9