Increase (Decrease) In Accrual For Loss Contingency

No definition available.

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- Definition

Litigation Settlement, Amount Paid By Insurance

+ References

No definition available.

+ Details

Name:	stx_LitigationSettlementAmountPaidByInsurance
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Balance Type:	credit
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- Definition

Litigation Settlement, Escrow Amount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Litigation Settlement, Number Of Internal Audits

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

Loss Contingency Settlement Amount

+ References

No definition available.

+ Details

Name:	stx_LossContingencySettlementAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Loss Contingency Settlement Number Of Audits

+ References

No definition available.

+ Details

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- Definition

Loss Contingency Settlement Number Of Internal Audits

+ References

No definition available.

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- Definition

Loss Contingency Settlement Quarterly Installments Amount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Loss Contingency Settlement Terms Period Of Payments

+ References

No definition available.

+ Details

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- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483049/450-30-50-1

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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

+ Details

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

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-10

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of loss (reversal of loss) recognized for loss contingency liability. Includes, but is not limited to, effect of revision in previously reported estimate.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

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Legal, Environmental and Other Contingencies (Details) $ in Millions			3 Months Ended		12 Months Ended
	Apr. 03, 2026 USD ($)	Apr. 18, 2023 USD ($) audit	Oct. 02, 2026 USD ($)	Oct. 03, 2025 USD ($)	Jul. 03, 2026 USD ($)
Gain Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 175
Litigation Settlement, Amount Paid By Insurance	$ 70
Gain (Loss) from Litigation Settlement					$ 105
Litigation Settlement, Escrow Amount			$ 105
Litigation settlement amount		$ 300
Litigation settlement payments, quarterly installments amount		$ 15
Litigation settlement, number of years of payment		5 years
Litigation settlement, number of audits \| audit		3
Litigation settlement, number of third-party audits \| audit		1
Litigation settlement, number of internal audits \| audit		2
BIS settlement penalty				$ 300
BIS settlement penalty			15
Location, Statement of Financial Position, Balance [Axis]: us-gaap:AccruedLiabilitiesCurrent
Gain Contingencies [Line Items]
Litigation settlement, amount accrued			45
Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Gain Contingencies [Line Items]
Litigation settlement, amount accrued			$ 60