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Contingencies - Summary of Cumulative Trauma Product Liability Claims Activity (Detail)	12 Months Ended
	Dec. 31, 2020 lawsuit trauma_claim	Dec. 31, 2019 lawsuit trauma_claim	Dec. 31, 2018 trauma_claim lawsuit
Lawsuits
Loss Contingency, Quantities [Roll Forward]
Open lawsuits/Pending claims, January 1 | lawsuit	1,605	1,481	1,420
New lawsuits/claims | lawsuit	402	346	369
Settled and dismissed lawsuits/claims | lawsuit	(385)	(222)	(308)
Open lawsuits/Pending claims, December 31 | lawsuit	1,622	1,605	1,481
Pending claims
Loss Contingency, Quantities [Roll Forward]
Open lawsuits/Pending claims, January 1 | trauma_claim	2,456	2,355	2,242
New lawsuits/claims | trauma_claim	917	486	479
Settled and dismissed lawsuits/claims | trauma_claim	(495)	(385)	(366)
Open lawsuits/Pending claims, December 31 | trauma_claim	2,878	2,456	2,355

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Loss Contingency, Quantities [Roll Forward]

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The number of claims settled and dismissed during the period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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-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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