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Contingencies - Summary of Cumulative Trauma Product Liability Claims Activity (Details) - LegalMatter	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Lawsuit
Loss Contingency, Quantities [Roll Forward]
Open lawsuits, beginning of period	1,420	1,794
New lawsuits	102	398
Settled and dismissed lawsuits	(69)	(772)
Open lawsuits, end of period	1,453
Damages from Product Defects
Loss Contingency, Quantities [Roll Forward]
Open lawsuits, beginning of period	2,242	3,023
New lawsuits	151	455
Settled and dismissed lawsuits	(82)	(1,236)
Open lawsuits, end of period	2,311

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- Definition

Loss Contingency, Quantities [Roll Forward]

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- Definition

The number of claims settled and dismissed during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
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The total number of new claims filed pertaining to a loss contingency during the period.

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Number of pending claims pertaining to a loss contingency.

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