Number of another entity's patents that the entity has allegedly infringed.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349

Name:	us-gaap_LossContingencyPatentsAllegedlyInfringedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Commitments and Contingencies - Narrative (Details) - unit	Mar. 10, 2015	Jan. 11, 2012
C.R. Bard, Inc.
Loss Contingencies [Line Items]
Number of petitions filed for reexamination of patents		3
Number of patents upheld over prior art references		2
The Delaware Action
Loss Contingencies [Line Items]
Number of patents allegedly infringed upon	3