Leverage Ratio

No definition available.

Name:	pnr_LeverageRatio
Namespace Prefix:	pnr_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460

+ Details

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(2))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_CommercialPaper
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ References

+ Details

Name:	us-gaap_DebtInstrumentCovenantCompliance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesTwoPointNinePercentDueTwentyEighteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesOnePointEightSevenFivePercentDueTwentySeventeenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesTwoPointSixFiveZeroPercentDueTwentyNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesFivePointZeroZeroZeroPercentDueTwentyTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesThreePointOneFiveZeroPercentDueTwentyTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesThreePointSixTwoFivePercentDueTwentyTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesFourPointSixFivePercentDueTwentyTwentyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pnr_SeniorNotesTwoPointFourFivePercentDueTwentyNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=pnr_OtherCreditFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Additional Information (Detail) $ in Millions	3 Months Ended	12 Months Ended
Debt - Additional Information (Detail) $ in Millions	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 02, 2015 USD ($)	Oct. 03, 2014 USD ($)
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 4,529.6	$ 4,279.2
Compliance with debt agreement financial covenants		we were in compliance with all financial covenants in our debt agreements
Maximum
Debt Instrument [Line Items]
Costs and expenses incurred in connection with acquisition excluded from computation of Net Income figure used in our debt covenant calculation	$ 25.0
Debt agreement financial covenant, leverage ratio	3.5
Minimum
Debt Instrument [Line Items]
Debt agreement financial covenant, leverage ratio	4.0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 2,500.0	$ 2,100.0
Remaining availability under Credit Facility	$ 1,295.4
Revolving Credit Facility [Member] \| Maximum
Debt Instrument [Line Items]
Remaining availability under Credit Facility	96.2
Commercial Paper [Member]
Debt Instrument [Line Items]
Commercial Paper	$ 532.7	$ 398.7
Debt, Weighted Average Interest Rate	1.962%
Senior Notes [Member] \| Senior Notes 2.900% Due 2018
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 500.0	500.0
Debt, Weighted Average Interest Rate	2.90%
Senior Notes [Member] \| Senior Notes 1.875% Due 2017
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 350.0	350.0
Debt, Weighted Average Interest Rate	1.875%
Senior Notes [Member] \| Senior Notes 2.650% Due 2019
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 250.0	250.0
Debt, Weighted Average Interest Rate	2.65%
Senior Notes [Member] \| Senior Notes 5.000% Due 2021
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 500.0	500.0
Debt, Weighted Average Interest Rate	5.00%
Senior Notes [Member] \| Senior Notes 3.150% Due 2022
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 550.0	550.0
Debt, Weighted Average Interest Rate	3.15%
Senior Notes [Member] \| Senior Notes 3.625% Due 2020
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 400.0	400.0
Debt, Weighted Average Interest Rate	3.625%
Senior Notes [Member] \| Senior Notes 4.65% Due 2025
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 250.0	250.0
Debt, Weighted Average Interest Rate	4.65%
Senior Notes [Member] \| Senior Notes 2.45% Due 2019
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 540.7	$ 520.7
Debt, Weighted Average Interest Rate	2.45%
Other Credit Facilities
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 53.2
Line of credit facility, amount outstanding	$ 0.0