Leases (Details) ft² in Thousands, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Apr. 30, 2019 USD ($) ft²	Jan. 01, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Operating lease right-of-use assets	$ 60.8	$ 60.8
Operating lease liability	71.1	71.1
Sublease income	0.5	1.5
Lease payments due	90.9	90.9
Accounting Standards Update 2016-02
Property, Plant and Equipment [Line Items]
Operating lease right-of-use assets					$ 54.0
Operating lease liability					$ 64.0
Distribution Facility
Property, Plant and Equipment [Line Items]
Operating lease right-of-use assets			$ 14.7
Operating lease liability			$ 14.7	$ 19.8
Leased facility size (square feet) | ft²				490
Lease term (months)				125 months
NEVADA | Building
Property, Plant and Equipment [Line Items]
Operating lease right-of-use assets	0.6	0.6
Operating lease liability	$ 0.6	$ 0.6
Lease term (months)	60 months	60 months
Lease payments due	$ 0.7	$ 0.7
Shanghai | Building
Property, Plant and Equipment [Line Items]
Operating lease right-of-use assets	0.1	0.1
Operating lease liability	$ 0.1	$ 0.1
Lease term (months)	24 months	24 months
Lease payments due	$ 0.1	$ 0.1
GERMANY
Property, Plant and Equipment [Line Items]
Gain on settlement of lease obligation	$ 0.8	$ 0.8