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Restructuring - Costs Included in Selling, General & Administrative expenses on Consolidated Statements of Income (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 88.3 us-gaap_RestructuringCharges | $ 103.2 us-gaap_RestructuringCharges | $ 48.7 us-gaap_RestructuringCharges
Severance and related costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 58.9 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = pnr_SeveranceAndRelatedCostsMember | 81.5 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = pnr_SeveranceAndRelatedCostsMember | 43.4 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = pnr_SeveranceAndRelatedCostsMember
Other |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 29.4 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember | $ 21.7 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember | $ 5.3 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Details
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