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Goodwill and other intangible assets - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]      
Amortization expense of intangible assets $ 60,926,000us-gaap_AmortizationOfIntangibleAssets $ 50,608,000us-gaap_AmortizationOfIntangibleAssets $ 44,264,000us-gaap_AmortizationOfIntangibleAssets
Semprus Technology      
Finite-Lived Intangible Assets [Line Items]      
Net assets 41,000,000us-gaap_AssetsNet
/ dei_LegalEntityAxis
= tfx_SemprusTechnologyMember		    
Trade Names      
Finite-Lived Intangible Assets [Line Items]      
Indefinite lived intangible assets $ 359,300,000us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember