Commitments and Contingencies - Product Liability (Details)	3 Months Ended	12 Months Ended
Mar. 31, 2019 USD ($) individual lawsuit case item	Dec. 31, 2018 item
Product Liability - Bair Hugger
Product Liability Litigation
Number of plaintiffs \| item	5,080	5,015
Accrued loss contingency reserve \| $	$ 0
Number of federal bellwether cases in aggregate that have a scheduled trial date set	12
Number of federal bellwether cases dismissed	11
Number of total claims dismissed \| case	61
Product Liability - Bair Hugger and medical malpractice claims \| Hidalgo County Texas
Product Liability Litigation
Number of lawsuits filed	1
Product Liability - Bair Hugger and medical malpractice claims \| Hidalgo County Texas and Ramsey County Minnesota in Aggregate
Product Liability Litigation
Number of lawsuits filed	2
Product Liability - Dual-Ended Combat Arms Earplugs
Product Liability Litigation
Number of lawsuits filed	635
Number of putative class action and other lawsuits	6
Number of plaintiffs \| individual	1,700

This element represents the number of federal bellwether cases dismissed.

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- Definition

This element represents the number of federal bellwether cases in aggregate that have a scheduled trial date set.

+ References

No definition available.

+ Details

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- Definition

The number of putative class action and other lawsuits.

+ References

No definition available.

+ Details

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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- Definition

Number of claims dismissed.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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