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Commitments and contingent liabilities - Additional Information (Detail) (USD $) | 0 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Dec. 05, 2014 | Mar. 29, 2015 | Dec. 31, 2014
Loss Contingencies [Line Items] |  |  |
Estimated litigation liability |  | 5,000,000 us-gaap_LitigationReserve |
Parish of Calcasieu | Judicial Ruling | Compensatory Damages |  |  |
Loss Contingencies [Line Items] |  |  |
Damages awarded | 100,000 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_LitigationCaseAxis = tfx_ParishofCalcasieuMember / us-gaap_LitigationStatusAxis = us-gaap_JudicialRulingMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = tfx_CompensatoryDamagesMember |  |
Parish of Calcasieu | Judicial Ruling | Punitive Damages |  |  |
Loss Contingencies [Line Items] |  |  |
Damages awarded | 23,000,000 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_LitigationCaseAxis = tfx_ParishofCalcasieuMember / us-gaap_LitigationStatusAxis = us-gaap_JudicialRulingMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = tfx_PunitiveDamagesMember |  |
Parish of Calcasieu | Judicial Ruling | Unfavorable Regulatory Action |  |  |
Loss Contingencies [Line Items] |  |  |
Possible loss |  |  | 10,000,000 us-gaap_LossContingencyRangeOfPossibleLossMaximum / us-gaap_LitigationCaseAxis = tfx_ParishofCalcasieuMember / us-gaap_LitigationStatusAxis = us-gaap_JudicialRulingMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember
Discontinued Operations |  |  |
Loss Contingencies [Line Items] |  |  |
Estimated litigation liability |  | 1,500,000 us-gaap_LitigationReserve / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |
Minimum |  |  |
Loss Contingencies [Line Items] |  |  |
Time-frame over which the accrued amounts may be paid out, in years |  | 15 years |
Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Time-frame over which the accrued amounts may be paid out, in years |  | 20 years |
Accrued Liabilities |  |  |
Loss Contingencies [Line Items] |  |  |
Waste disposed accrued liability |  | 1,100,000 us-gaap_AccrualForEnvironmentalLossContingencies / us-gaap_InformationByFinancialStatementLineItemAxis = us-gaap_AccruedLiabilitiesMember |
Other Liability |  |  |
Loss Contingencies [Line Items] |  |  |
Waste disposed accrued liability |  | 6,500,000 us-gaap_AccrualForEnvironmentalLossContingencies / us-gaap_InformationByFinancialStatementLineItemAxis = tfx_OtherLiabilityMember |

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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- Definition Amount of damages awarded to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: 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=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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