Debt Instrument, Redemption, Discount Rate, Basis Spread on Variable Rate

No definition available.

Name:	jnpr_DebtInstrumentRedemptionDiscountRateBasisSpreadonVariableRate
Namespace Prefix:	jnpr_
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- Definition

Debt Instrument, Redemption, Redemption Period

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Financing arrangements.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Line of Credit Facility, Additional Borrowing Capacity

+ References

No definition available.

+ Details

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Namespace Prefix:	jnpr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

-- None. No documentation exists for this element. --

+ References

No definition available.

+ Details

Name:	jnpr_NumberOfDaysDueFromReceivable
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Balance Type:	na
Period Type:	duration

- Definition

Receivables from sale of receivables.

+ References

No definition available.

+ Details

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

- Definition

Repurchase Price Percentage Related to Change of Control

+ References

No definition available.

+ Details

Name:	jnpr_RepurchasePricePercentageRelatedtoChangeofControl
Namespace Prefix:	jnpr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Sale of trade receivable.

+ References

No definition available.

+ Details

Name:	jnpr_SaleOfReceivable
Namespace Prefix:	jnpr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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_DebtInstrumentCarryingAmount
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

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
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

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

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

- 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

+ 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

The cash inflow associated with the proceeds from sale and collection of receivables during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

+ Details

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Balance Type:	debit
Period Type:	duration

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- Details

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Name:	us-gaap_VariableRateAxis=jnpr_ICEBenchmarkAdministrationSettlementRateMember
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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=jnpr_FixedRateNoteDue2019Member
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- Details

Name:	us-gaap_DebtInstrumentAxis=jnpr_FixedRateNoteDue2024IssuedFebruary2016Member
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- Details

Name:	us-gaap_DebtInstrumentAxis=jnpr_Fixedratenotedue2020Member
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- Details

Name:	us-gaap_DebtInstrumentAxis=jnpr_FixedRateNoteDue2025Member
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- Details

Name:	us-gaap_DebtInstrumentAxis=jnpr_FixedRateNoteDue2024IssuedMarch2014Member
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Name:	us-gaap_DebtInstrumentAxis=jnpr_OtherFixedRateNotesMember
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Debt and Financing (Details) - USD ($)		12 Months Ended
Debt and Financing (Details) - USD ($)	Jun. 27, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Feb. 29, 2016	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2011
Debt Instrument [Line Items]
Long-term debt		$ 2,150,000,000
Repurchase price percentage related to change in control		101.00%
Financing Arrangements [Abstract]
Sale of receivables		$ 95,600,000	$ 72,500,000	$ 440,300,000
Proceeds from sale and collection of receivables		83,200,000	99,300,000	$ 602,100,000
Receivables from sale of receivables		$ 13,600,000	$ 1,200,000
Minimum [Member]
Financing Arrangements [Abstract]
Number of days due from receivable		30 days
Maximum [Member]
Financing Arrangements [Abstract]
Number of days due from receivable		90 days
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 500,000,000.0
Additional borrowing capacity	$ 200,000,000
Long-term line of credit		$ 0
Revolving Credit Facility [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility [Member] \| ICE Benchmark Administration Settlement Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility [Member] \| Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
Revolving Credit Facility [Member] \| Minimum [Member] \| Eurodollar [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%
Revolving Credit Facility [Member] \| Maximum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility [Member] \| Maximum [Member] \| Eurodollar [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Fixed Rate Note Due 2019 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 350,000,000			$ 350,000,000
Stated interest rate		3.125%			3.125%
Fixed Rate Note Due 2024, Issued February 2016 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 150,000,000			$ 150,000,000
Stated interest rate		4.50%			4.50%
Fixed rate note due 2020 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 300,000,000				$ 300,000,000
Stated interest rate		3.30%				3.30%
Debt instrument, redemption, redemption period		1 month
Fixed Rate Note Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 300,000,000				$ 300,000,000
Stated interest rate		4.35%				4.35%
Debt instrument, redemption, redemption period		3 months
Fixed Rate Note Due 2024, Issued March 2014 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 350,000,000					$ 350,000,000
Stated interest rate		4.50%
Fixed Rate Note Due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 300,000,000						$ 300,000,000
Stated interest rate		4.60%						4.60%
Fixed Rate Note Due 2041 [Member]
Debt Instrument [Line Items]
Long-term debt		$ 400,000,000						$ 400,000,000
Stated interest rate		5.95%						5.95%
Other Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Debt instrument, redemption price, percent		100.00%
One Month Prior to Maturity [Member] \| Fixed rate note due 2020 [Member] \| Treasury Rate [Member]
Debt Instrument [Line Items]
Debt instrument, redemption, discount rate, basis spread on variable rate		0.30%
One Month Prior to Maturity [Member] \| Fixed Rate Note Due 2025 [Member] \| Treasury Rate [Member]
Debt Instrument [Line Items]
Debt instrument, redemption, discount rate, basis spread on variable rate		0.375%
One Month Prior to Maturity [Member] \| Fixed Rate Notes Due 2020 And 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, redemption price, percent		100.00%
Any Time on or After May 15, 2020 [Member] \| Fixed rate note due 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, redemption price, percent		100.00%
Any Time on or After May 15, 2020 [Member] \| Fixed Rate Note Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, redemption price, percent		100.00%