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v2.4.1.9

Segment Information - Additional Information (Detail) (Customer Concentration Risk) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Customer Concentration Risk |  |  |
Revenue, Major Customer [Line Items] |  |  |
Number of significant customers | 0 pnr_NumberOfCustomersWithSignificantRevenue / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 0 pnr_NumberOfCustomersWithSignificantRevenue / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 0 pnr_NumberOfCustomersWithSignificantRevenue / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember

X
- Definition Number Of Customers With Significant Revenue + References No definition available. + Details
Name: | pnr_NumberOfCustomersWithSignificantRevenue
Namespace Prefix: | pnr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_EntityWideRevenueMajorCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration