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Financial Statements of Parent Company Guarantor - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2014
Nov. 30, 2012
Sep. 28, 2013
Senior Notes 1.350% due 2015      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate   1.35%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesOnePointThreeFiveZeroPercentDueTwentyFifteenMember		  
Senior Notes 1.875 % due 2017      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate     1.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_NotesOnePointEightSevenFivePercentDueTwentySeventeenMember
Senior Notes 2.650% due 2019      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate   2.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesTwoPointSixFiveZeroPercentDueTwentyNineteenMember		  
Senior Notes, 5.000% Due 2021      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesFivePointZeroZeroZeroPercentDueTwentyTwentyOneMember		    
Senior Notes 3.150% due 2022      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate     3.15%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesThreePointOneFiveZeroPercentDueTwentyTwentyTwoMember
Subsidiary Issuer      
Condensed Financial Statements, Captions [Line Items]      
Ownership percentage 100.00%us-gaap_VariableInterestEntityOwnershipPercentage
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryIssuerMember		    
Subsidiary Issuer | Senior Notes 1.350% due 2015      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate 1.35%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesOnePointThreeFiveZeroPercentDueTwentyFifteenMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryIssuerMember		    
Subsidiary Issuer | Senior Notes 1.875 % due 2017      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate 1.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_NotesOnePointEightSevenFivePercentDueTwentySeventeenMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryIssuerMember		    
Subsidiary Issuer | Senior Notes 2.650% due 2019      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate 2.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesTwoPointSixFiveZeroPercentDueTwentyNineteenMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryIssuerMember		    
Subsidiary Issuer | Senior Notes, 5.000% Due 2021      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesFivePointZeroZeroZeroPercentDueTwentyTwentyOneMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryIssuerMember		    
Subsidiary Issuer | Senior Notes 3.150% due 2022      
Condensed Financial Statements, Captions [Line Items]      
Debt, interest rate 3.15%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= pnr_SeniorNotesThreePointOneFiveZeroPercentDueTwentyTwentyTwoMember
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryIssuerMember