Property, Plant and Equipment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Document Period End Date		Dec. 31, 2017
Property, plant and equipment at cost		$ 783.3	$ 864.0
Less accumulated depreciation and amortization		418.8	477.0
Total property plant and equipment, net		364.5	387.0
Depreciation		92.9	61.8	$ 40.7
Impairment of assets		3.1	9.8	$ 18.9
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		16.0	16.9
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		112.9	129.8
Machinery, tools and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		108.2	121.0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	[1]	28.3	29.4
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		153.8	133.8
Computer software
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		146.6	224.7
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		73.4	75.0
Tooling
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		136.4	123.1
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost		$ 7.7	$ 10.3
Maximum | Land and land improvements
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P15Y
Maximum | Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P30Y
Maximum | Machinery, tools and equipment
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P12Y
Maximum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)	[1]	P10Y
Maximum | Computer equipment
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P3Y
Maximum | Computer software
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P10Y
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P8Y
Maximum | Tooling
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P5Y
Minimum | Land and land improvements
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P0Y
Minimum | Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P15Y
Minimum | Machinery, tools and equipment
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P5Y
Minimum | Computer software
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P5Y
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P5Y
Minimum | Tooling
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum (years)		P3Y

[1] The estimated useful life for leasehold improvements is the lesser of 10 years or the term of the lease.