Summary of Cumulative Trauma Product Liability Claims Activity (Detail)	6 Months Ended	12 Months Ended
Jun. 30, 2014 LegalMatter	Dec. 31, 2013 LegalMatter
Loss Contingency, Quantities [Roll Forward]
Open lawsuits, beginning of period	2,840	2,609
New lawsuits	236	489
Settled and dismissed lawsuits	(152)	(258)
Open lawsuits, end of period	2,924	2,840

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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

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

+ Details

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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

+ Details

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- Definition

Number of pending claims pertaining to a loss contingency.

+ References

+ Details

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