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Commitments and contingent liabilities (Detail)
¥ in Millions, $ in Millions
6 Months Ended
Mar. 24, 2017
USD ($)
Mar. 24, 2017
CNY (¥)
Dec. 05, 2014
USD ($)
Jul. 02, 2017
USD ($)
Loss Contingencies [Line Items]        
Estimated litigation liability       $ 2.5
Minimum        
Loss Contingencies [Line Items]        
Estimated time fram over which accrued amounts may be paid out       15 years
Maximum        
Loss Contingencies [Line Items]        
Estimated time fram over which accrued amounts may be paid out       20 years
Accrued Liabilities        
Loss Contingencies [Line Items]        
Accrual for environmental loss contingencies       $ 1.1
Other Liability        
Loss Contingencies [Line Items]        
Accrual for environmental loss contingencies       5.5
Discontinued Operations        
Loss Contingencies [Line Items]        
Estimated litigation liability       1.7
Distributor vs Teleflex Medical Trading Company, Ltd.        
Loss Contingencies [Line Items]        
Damages sought $ 7.5 ¥ 51.2    
Distributor vs Teleflex Medical Trading Company, Ltd. Repurchase of Inventory        
Loss Contingencies [Line Items]        
Damages sought 14.4 97.5    
Teleflex Medical Trading Company, Ltd. vs Distributor - Outstanding Receivables        
Loss Contingencies [Line Items]        
Damages sought $ 9.0 ¥ 61.2    
Compensatory Damages | Judicial Ruling | Parish of Calcasieu        
Loss Contingencies [Line Items]        
Damages awarded     $ 0.1  
Punitive Damages | Judicial Ruling | Parish of Calcasieu        
Loss Contingencies [Line Items]        
Damages awarded     $ 23.0  
Unfavorable Regulatory Action | Judicial Ruling | Parish of Calcasieu | Maximum        
Loss Contingencies [Line Items]        
Estimate of possible loss       $ 10.0