Leverage Ratio

No definition available.

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- 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

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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
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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

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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

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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

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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

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

- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685

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Balance Type:	na
Period Type:	duration

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Debt - Additional Information (Detail) € in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Sep. 02, 2015 USD ($)	Oct. 03, 2014 USD ($)
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 4,551.7	$ 4,686.5
Compliance with debt agreement financial covenants	we were in compliance with all financial covenants in our debt agreements
Subsidiary Issuer
Debt Instrument [Line Items]
Ownership percentage	100.00%
Subsidiary Issuer \| Senior Notes 1.875% Due 2017
Debt Instrument [Line Items]
Debt, interest rate	1.875%
Subsidiary Issuer \| Senior Notes 2.650% Due 2019
Debt Instrument [Line Items]
Debt, interest rate	2.65%
Subsidiary Issuer \| Senior Notes 5.000% Due 2021
Debt Instrument [Line Items]
Debt, interest rate	5.00%
Subsidiary Issuer \| Senior Notes 3.150% Due 2022
Debt Instrument [Line Items]
Debt, interest rate	3.15%
Pentair, Inc [Member] \| Senior Notes 5.000% Due 2021
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 127.0
Pentair Finance S.A. [Member] \| Senior Notes 5.000% Due 2021
Debt Instrument [Line Items]
Debt Instrument, Face Amount	373.0
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	3.00
Minimum
Debt Instrument [Line Items]
Debt agreement financial covenant, leverage ratio	3.50
Other Credit Facilities
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 51.4
Line of credit facility, amount outstanding	0.0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity				$ 2,500.0	$ 2,100.0
Remaining availability under Credit Facility	1,278.8
Revolving Credit Facility [Member] \| Maximum
Debt Instrument [Line Items]
Remaining availability under Credit Facility	630.1
Commercial Paper [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 161.5	179.5
Debt, Weighted Average Interest Rate	1.713%
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%	2.90%	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%	3.625%	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%	4.65%	4.65%
Senior Notes [Member] \| Senior Notes 2.45% Due 2019
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 551.3	$ 548.4	€ 500.0
Debt, Weighted Average Interest Rate	2.45%	2.45%	2.45%