Business Description and Summary of Significant Accounting Policies - Estimated useful lives of depreciable properties (Details)	12 Months Ended
Dec. 31, 2017
Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable properties	5-40 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable properties	5-20 years
Tooling
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable properties	3-5 years

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223

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Balance Type:	na
Period Type:	duration