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Supplemental Balance Sheet Information - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 351.5		$ 351.5		$ 422.0
Accumulated Amortization	(217.7)		(217.7)		(278.8)
Net Carrying Amount	133.8		133.8		143.2
Indefinite-lived intangible assets acquired			5.7		5.7
Amortization expense for intangible assets	4.7	$ 5.1	9.2	$ 10.4
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	76.4		76.4		125.9
Accumulated Amortization	(50.0)		(50.0)		(97.6)
Net Carrying Amount	26.4		26.4		28.3
Patents and acquired technologies
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	237.1		237.1		253.0
Accumulated Amortization	(136.9)		(136.9)		(146.1)
Net Carrying Amount	100.2		100.2		106.9
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	38.0		38.0		43.1
Accumulated Amortization	(30.8)		(30.8)		(35.1)
Net Carrying Amount	$ 7.2		$ 7.2		$ 8.0

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