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Contingencies - Summary of Cumulative Trauma Product Liability Claims Activity (Detail) - LegalMatter | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Lawsuits |  |  |
Loss Contingency, Quantities [Roll Forward] |  |  |
Open lawsuits/Pending claims, January 1 | 1,420 | 1,794 | 1,988
New lawsuits/claims | 369 | 398 | 379
Settled and dismissed lawsuits/claims | (308) | (772) | (573)
Open lawsuits/Pending claims, December 31 | 1,481 | 1,420 | 1,794
Pending claims |  |  |
Loss Contingency, Quantities [Roll Forward] |  |  |
Open lawsuits/Pending claims, January 1 | 2,242 | 3,023 | 3,779
New lawsuits/claims | 479 | 455 | 843
Settled and dismissed lawsuits/claims | (366) | (1,236) | (1,599)
Open lawsuits/Pending claims, December 31 | 2,355 | 2,242 | 3,023

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