Label	Element	Value
Prospectus [Line Items]	rr_ProspectusLineItems
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2023
Entity Registrant Name	dei_EntityRegistrantName	JNL SERIES TRUST
Entity Central Index Key	dei_EntityCentralIndexKey	0000933691
Entity Inv Company Type	dei_EntityInvCompanyType	N-1A
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Aug. 30, 2024
Document Effective Date	dei_DocumentEffectiveDate	Oct. 21, 2024
Prospectus Date	rr_ProspectusDate	Apr. 29, 2024
Supplement to Prospectus [Text Block]	rr_SupplementToProspectusTextBlock	Supplement Dated August 30, 2024 To The Prospectus Dated April 29, 2024 JNL^® Series Trust Please note that the changes may impact your variable annuity and/or variable life product(s). All changes are effective October 21, 2024.
JNL Multi-Manager Mid Cap Fund
Prospectus [Line Items]	rr_ProspectusLineItems
Strategy [Heading]	rr_StrategyHeading	In the section, “Summary Overview of Each Fund,” under “Principal Investment Strategies,” for the JNL Multi-Manager Mid Cap Fund, please delete the “ClearBridge Strategy” in the entirety.
JNL Multi-Manager U.S. Select Equity Fund
Prospectus [Line Items]	rr_ProspectusLineItems
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	In the section, “Summary Overview of Each Fund,” under “Performance,” for the JNL Multi-Manager U.S. Select Equity Fund, after the second paragraph, please add the following:
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	Effective October 21, 2024, the Fund was combined with the JNL/Baillie Gifford U.S. Equity Growth Fund (“Acquired Fund”), with the Fund as the surviving Fund. The performance shown is the Fund’s historical performance and does not reflect the performance of the Acquired Fund.

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

No definition available.

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- Definition

The date the document was made available and submitted, in YYYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.

+ References

No definition available.

+ Details

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- Definition

The date when a document, upon receipt and acceptance, becomes officially effective, in YYYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.

+ References

No definition available.

+ Details

Name:	dei_DocumentEffectiveDate
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
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- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

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Namespace Prefix:	dei_
Data Type:	dei:submissionTypeItemType
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Period Type:	duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

+ Details

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- Definition

One of: N-1A (Mutual Fund), N-1 (Open-End Separate Account with No Variable Annuities), N-2 (Closed-End Investment Company), N-3 (Separate Account Registered as Open-End Management Investment Company), N-4 (Variable Annuity UIT Separate Account), N-5 (Small Business Investment Company), N-6 (Variable Life UIT Separate Account), S-1 or S-3 (Face Amount Certificate Company), S-6 (UIT, Non-Insurance Product).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-T
-Number 232
-Section 313

+ Details

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Namespace Prefix:	dei_
Data Type:	dei:invCompanyType
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Period Type:	duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

+ Details

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Namespace Prefix:	dei_
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- Definition

Risk/Return Bar Chart and Table.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 4
-Subsection b
-Paragraph 2

+ Details

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Namespace Prefix:	rr_
Data Type:	xbrli:stringItemType
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- Definition

Risk/Return Bar Chart and Table.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 4
-Subsection b
-Paragraph 2

+ Details

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Namespace Prefix:	rr_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

- Definition

The date of the prospectus.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a
-Paragraph 3

+ Details

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Namespace Prefix:	rr_
Data Type:	xbrli:dateItemType
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- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A

+ Details

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Namespace Prefix:	rr_
Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Principal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 4
-Subsection a

+ Details

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Namespace Prefix:	rr_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

This element contains the text of a prospectus supplement (submission type 497) not already contained in an element containing amended text or other data from a previous submission.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A

+ Details

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Namespace Prefix:	rr_
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Balance Type:	na
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- Details

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- Details

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