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Contingencies - Summary of Cumulative Trauma Product Liability Claims Activity (Details) - LegalMatter | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017
Lawsuit |  |
Loss Contingency, Quantities [Roll Forward] |  |
Open lawsuits, beginning of period | 1,420 | 1,794
New lawsuits | 189 | 398
Settled and dismissed lawsuits | (139) | (772)
Open lawsuits, end of period | 1,470 |
Damages from Product Defects |  |
Loss Contingency, Quantities [Roll Forward] |  |
Open lawsuits, beginning of period | 2,242 | 3,023
New lawsuits | 258 | 455
Settled and dismissed lawsuits | (155) | (1,236)
Open lawsuits, end of period | 2,345 |

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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 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&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 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=82911808&loc=d3e14435-108349 + Details
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