Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Capital Expenditures Incurred but Not yet Paid	$ 58.3		$ 58.4
Capitalized interest costs	7.7	$ 7.0
Property Plant and Equipment
Total property, plant and equipment, gross	3,067.7		3,043.9
Less: accumulated depreciation	(1,042.7)		(1,076.8)
Property, plant and equipment, net, excluding tooling	2,025.0		1,967.1
Tooling, net of amortization	135.5		126.8
Property, plant and equipment, net	2,160.5		2,093.9
Land, land use rights and buildings [Member]
Property Plant and Equipment
Total property, plant and equipment, gross	772.1		784.8
Machinery and equipment [Member]
Property Plant and Equipment
Total property, plant and equipment, gross	1,912.8		1,940.3
Capital leases [Member]
Property Plant and Equipment
Total property, plant and equipment, gross	9.1		8.4
Construction in progress [Member]
Property Plant and Equipment
Total property, plant and equipment, gross	$ 373.7		$ 310.4