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v2.4.1.9

Goodwill and Other Identifiable Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Goodwill [Roll Forward] |  |
Beginning Balance | $ 4,860.7 us-gaap_Goodwill | $ 4,837.5 us-gaap_Goodwill
Acquisitions/ divestitures | 6.8 us-gaap_GoodwillAcquiredDuringPeriod | (3.4)us-gaap_GoodwillAcquiredDuringPeriod
Foreign currency translation/other | (125.6)us-gaap_GoodwillOtherChanges | 26.6 us-gaap_GoodwillOtherChanges
Ending Balance | 4,741.9 us-gaap_Goodwill | 4,860.7 us-gaap_Goodwill
Valves & Controls |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 1,511.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember | 1,511.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember
Acquisitions/ divestitures | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember
Foreign currency translation/other | 0 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember | 0 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember
Ending Balance | 1,511.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember | 1,511.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_ValvesAndControlsMember
Flow & Filtration Solutions [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 1,036.4 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember | 1,019.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember
Acquisitions/ divestitures | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember | (5.7)us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember
Foreign currency translation/other | (94.0)us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember | 22.5 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember
Ending Balance | 942.4 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember | 1,036.4 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_FlowFiltrationSolutionsMember
Water Quality Systems [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 1,154.7 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember | 1,144.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember
Acquisitions/ divestitures | 6.8 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember | 7.6 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember
Foreign currency translation/other | (23.9)us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember | 2.5 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember
Ending Balance | 1,137.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember | 1,154.7 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_WaterQualitySystemsMember
Technical Solutions |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 1,158.0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember | 1,161.7 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember
Acquisitions/ divestitures | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember | (5.3)us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember
Foreign currency translation/other | (7.7)us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember | 1.6 us-gaap_GoodwillOtherChanges / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember
Ending Balance | $ 1,150.3 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember | $ 1,158.0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = pnr_TechnicalSolutionsMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of other (increase) decrease of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Balance Type: | na
Period Type: | duration

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- Details
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |