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Discontinued Operations and Divestitures Additional Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 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
Business Acquisition [Line Items]                      
Proceeds from Divestiture of Businesses                 $ 0.3us-gaap_ProceedsFromDivestitureOfBusinesses $ 43.5us-gaap_ProceedsFromDivestitureOfBusinesses $ 0us-gaap_ProceedsFromDivestitureOfBusinesses
Discontinued Operation, Tax (Expense) Benefit from Provision for (Gain) Loss on Disposal   12.3us-gaap_DiscontinuedOperationTaxExpenseBenefitFromProvisionForGainLossOnDisposal   2.4us-gaap_DiscontinuedOperationTaxExpenseBenefitFromProvisionForGainLossOnDisposal 0.3us-gaap_DiscontinuedOperationTaxExpenseBenefitFromProvisionForGainLossOnDisposal       14.7us-gaap_DiscontinuedOperationTaxExpenseBenefitFromProvisionForGainLossOnDisposal 0.3us-gaap_DiscontinuedOperationTaxExpenseBenefitFromProvisionForGainLossOnDisposal 0us-gaap_DiscontinuedOperationTaxExpenseBenefitFromProvisionForGainLossOnDisposal
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax       (5.6)us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax (0.8)us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax            
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
Gain (Loss) on Disposition of Business                 (0.2)us-gaap_GainLossOnSaleOfBusiness 20.8us-gaap_GainLossOnSaleOfBusiness 0us-gaap_GainLossOnSaleOfBusiness
Technical Solutions [Member]                      
Business Acquisition [Line Items]                      
Proceeds from Divestiture of Businesses                   30.1us-gaap_ProceedsFromDivestitureOfBusinesses
/ us-gaap_StatementBusinessSegmentsAxis
= pnr_TechnicalSolutionsMember
 
Gain (Loss) on Disposition of Business                   16.8us-gaap_GainLossOnSaleOfBusiness
/ us-gaap_StatementBusinessSegmentsAxis
= pnr_TechnicalSolutionsMember
 
Goodwill, Written off Related to Sale of Business Unit                   5.3us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit
/ us-gaap_StatementBusinessSegmentsAxis
= pnr_TechnicalSolutionsMember
 
Flow Technologies [Member]                      
Business Acquisition [Line Items]                      
Proceeds from Divestiture of Businesses                   13.4us-gaap_ProceedsFromDivestitureOfBusinesses
/ us-gaap_StatementBusinessSegmentsAxis
= pnr_FlowTechnologiesMember
 
Gain (Loss) on Disposition of Business                   4.0us-gaap_GainLossOnSaleOfBusiness
/ us-gaap_StatementBusinessSegmentsAxis
= pnr_FlowTechnologiesMember
 
Goodwill, Written off Related to Sale of Business Unit                   $ 5.7us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit
/ us-gaap_StatementBusinessSegmentsAxis
= pnr_FlowTechnologiesMember