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Derivatives and Financial Instruments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2014
Sep. 27, 2014
Jun. 28, 2014
Mar. 29, 2014
Dec. 31, 2013
Sep. 28, 2013
Jun. 29, 2013
Mar. 30, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Apr. 30, 2011
Aug. 31, 2007
Sep. 30, 2005
Derivative Instruments and Hedging Activities Disclosure [Line Items]                            
Discontinued Operation, Provision for Loss (Gain) on Disposal, Net of Tax $ 0us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ (380.1)us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ 0us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ (5.6)us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ (0.8)us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ 0us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ 0us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ 0us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ (385.7)us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ (0.8)us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax $ 0us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalNetOfTax      
Outstanding interest rate swap arrangements 0us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet       0us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet       0us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet 0us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet        
Loss on early extinguishment of debt                 0us-gaap_GainsLossesOnExtinguishmentOfDebt 0us-gaap_GainsLossesOnExtinguishmentOfDebt 75.4us-gaap_GainsLossesOnExtinguishmentOfDebt      
Location of the swap on the consolidated balance sheets                
Derivative gains and losses on interest rate swaps included in AOCI
          
Incremental expense resulting from interest rate swaps                     5.3us-gaap_GainLossOnInterestRateCashFlowHedgeIneffectiveness      
Interest Rate Swap                            
Derivative Instruments and Hedging Activities Disclosure [Line Items]                            
Average swap interest rate                       3.65%us-gaap_DerivativeAverageSwaptionInterestRate
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_InterestRateSwapMember		    
Cost of expiration (termination)                       11.0pnr_NotionalAmountOfDerivativesTerminations
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_InterestRateSwapMember		    
Derivative instrument contractual life                       10 years    
Unrealized net loss                 7.0us-gaap_UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_InterestRateSwapMember		 8.1us-gaap_UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_InterestRateSwapMember		        
Cross Currency Interest Rate Contract [Member]                            
Derivative Instruments and Hedging Activities Disclosure [Line Items]                            
Derivative Liability, Notional Amount 250.8us-gaap_DerivativeLiabilityNotionalAmount
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_ForeignExchangeContractMember		       130.3us-gaap_DerivativeLiabilityNotionalAmount
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_ForeignExchangeContractMember		       250.8us-gaap_DerivativeLiabilityNotionalAmount
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_ForeignExchangeContractMember		 130.3us-gaap_DerivativeLiabilityNotionalAmount
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_ForeignExchangeContractMember		        
August 2007 Interest Rate Swap Agreement                            
Derivative Instruments and Hedging Activities Disclosure [Line Items]                            
Swap agreement expiration                         2012-05  
September 2005 Interest Rate Swap Agreement                            
Derivative Instruments and Hedging Activities Disclosure [Line Items]                            
Effective date of the fixed rate swap                           Apr. 25, 2006
Fixed interest rate paid                           4.68%us-gaap_DerivativeFixedInterestRate
/ us-gaap_DerivativeInstrumentRiskAxis
= pnr_SeptemberTwentyZeroFiveInterestRateSwapAgreementMember
Swap agreement expiration                           2013-07
Effective fixed rate paid on debt                           5.28%pnr_DebtInstrumentEffectiveInterestRatePercentageAfterInterestRateSwap
/ us-gaap_DerivativeInstrumentRiskAxis
= pnr_SeptemberTwentyZeroFiveInterestRateSwapAgreementMember
Interest rate spread over LIBOR                           0.60%pnr_DerivativeBasisSpreadOnFixedRate
/ us-gaap_DerivativeInstrumentRiskAxis
= pnr_SeptemberTwentyZeroFiveInterestRateSwapAgreementMember
Loss on early extinguishment of debt                     3.3us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_DerivativeInstrumentRiskAxis
= pnr_SeptemberTwentyZeroFiveInterestRateSwapAgreementMember		      
Location of the swap on the consolidated balance sheets                 Other non-current liabilities Other non-current liabilities        
September 2005 Interest Rate Swap Agreement | Interest Rate Swap                            
Derivative Instruments and Hedging Activities Disclosure [Line Items]                            
Derivative Liability, Notional Amount                           100.0us-gaap_DerivativeLiabilityNotionalAmount
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= pnr_SeptemberTwentyZeroFiveInterestRateSwapAgreementMember
April 2011 Interest Rate Swap Agreement [Member] [Member] | Interest Rate Swap                            
Derivative Instruments and Hedging Activities Disclosure [Line Items]                            
Derivative Liability, Notional Amount                       $ 400.0us-gaap_DerivativeLiabilityNotionalAmount
/ pnr_DerivativeInstrumentDisclosureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= pnr_AprilTwentyElevenInterestRateSwapAgreementMemberMember