Customer Financing Agreement

No definition available.

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

- Definition

Debt Covenant, Maximum Leverage Ratio

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Debt Covenant, Maximum Leverage Ratio, Up To Four Quarters, If Acquisition Consummated

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt Covenant, Minimum Interest Coverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Redemption, Expiration, Period Prior To Maturity

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Redemption Price Percentage, Basis Spread On Discount Rate

+ References

No definition available.

+ Details

Name:	jnpr_DebtInstrumentRedemptionPricePercentageBasisSpreadOnDiscountRate
Namespace Prefix:	jnpr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility, accordion feature, increase limit, subject to certain conditions by obtaining additional commitments from existing and/or new lenders.

+ References

No definition available.

+ Details

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

- Definition

Long Term Debt Term, Extension Option

+ References

No definition available.

+ Details

Name:	jnpr_LongTermDebtTermExtensionOption
Namespace Prefix:	jnpr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Long Term Debt Term, Number of Extension Options

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	jnpr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Receivables from sale of receivables.

+ References

No definition available.

+ Details

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

- Definition

Repurchase Price Percentage Related To Change Of Control

+ References

No definition available.

+ Details

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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

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

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-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ 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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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

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
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-SubTopic 10
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-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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+ 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

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

- Definition

Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Definition

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

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Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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-Name Accounting Standards Codification
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+ Details

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

- Details

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Debt and Financing - Narrative (Details)	1 Months Ended	2 Months Ended	12 Months Ended
Debt and Financing - Narrative (Details)	Apr. 30, 2019 USD ($) extension_option	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Aug. 31, 2019 USD ($)
Debt Instrument [Line Items]
Repayment of debt			$ 950,000,000.0	$ 0	$ 0
Loss on extinguishment of debt			15,300,000	0	0
Sale of receivables			64,000,000.0	122,800,000	169,400,000
Proceeds from sale and collection of receivables			69,700,000	123,200,000	$ 169,300,000
Receivables from sale of receivables			5,300,000	$ 17,200,000
Cash received from financing provider			$ 0
Minimum
Debt Instrument [Line Items]
Number of days due from receivable			1 day
Maximum
Debt Instrument [Line Items]
Number of days due from receivable			90 days
3.750% fixed-rate notes (2029 Notes)
Debt Instrument [Line Items]
Stated interest rate			3.75%
4.350% fixed-rate notes (2025 Notes)
Debt Instrument [Line Items]
Stated interest rate			4.35%
Senior Notes \| 3.750% fixed-rate notes (2029 Notes)
Debt Instrument [Line Items]
Principal amount						$ 500,000,000.0
Stated interest rate						3.75%
Redemption period prior to maturity			3 months
Senior Notes \| 3.750% fixed-rate notes (2029 Notes) \| US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Redemption price, basis spread on discount rate			35.00%
Senior Notes \| Fixed Rate Note Due 2020 And Fixed Rate Note Due 2021
Debt Instrument [Line Items]
Repayment of debt		$ 600,000,000.0
Loss on extinguishment of debt		$ 15,300,000
Senior Notes \| 3.300% fixed-rate notes (2020 Notes)
Debt Instrument [Line Items]
Stated interest rate						3.30%
Senior Notes \| 4.350% fixed-rate notes (2025 Notes)
Debt Instrument [Line Items]
Redemption period prior to maturity			3 months
Senior Notes \| 4.350% fixed-rate notes (2025 Notes) \| US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Redemption price, basis spread on discount rate			37.50%
Senior Notes \| 4.600% fixed-rate notes (2024 Notes)
Debt Instrument [Line Items]
Stated interest rate						4.60%
Senior Notes \| Fixed Rate Note Due 2025 And Fixed Rate Note Due 2029
Debt Instrument [Line Items]
Debt instrument, redemption price, percent			100.00%
Repurchase price percentage related to change in control			101.00%
Line of Credit
Debt Instrument [Line Items]
Amounts outstanding			$ 0
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 500,000,000.0
Debt, term	5 years
Additional borrowing capacity	$ 200,000,000.0
Extension options \| extension_option	2
Maturity extension option period	1 year
Amounts outstanding			$ 0
Maximum leverage ratio	3.0
Maximum leverage ratio, if acquisition is consummated	3.5
Interest coverage ratio	3.0
Line of Credit \| Revolving Credit Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
Line of Credit \| Revolving Credit Facility \| Minimum \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	0.91%
Line of Credit \| Revolving Credit Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.375%
Line of Credit \| Revolving Credit Facility \| Maximum \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	1.375%
Variable Rate Component, Federal Funds \| Line of Credit \| Revolving Credit Facility \| Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Variable Rate Component, ICE Benchmark Administration Settlement Rate \| Line of Credit \| Revolving Credit Facility \| ICE Benchmark Administration Settlement Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%