Note 7 Accounts Receivable Sale Program (Details) - USD ($) $ in Millions	6 Months Ended
Mar. 28, 2020	Mar. 30, 2019	Sep. 28, 2019
Transfer of Financial Assets Accounted for as Sales [Line Items]
Face Value of Receivable Sold, Percentage	100.00%
Accounts Receivable Sold During The Period	$ 1,100	$ 1,400
RPA [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Accounts Receivable Sold and Outstanding	149		$ 241
Amount Collected But Not Remitted to Financial Institutions	$ 83		$ 76

Accounts Receivable Sold During The Period

No definition available.

Name:	sanm_AccountsReceivableSoldDuringThePeriod
Namespace Prefix:	sanm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Proceeds from collection of accounts receivable from customers but yet to be remitted to financial institutions in relation to the company’s accounts receivable factoring program which was classified as accrued liabilities at the end of the period.

+ References

No definition available.

+ Details

Name:	sanm_AmountCollectedButNotRemittedtoFinancialInstitutions
Namespace Prefix:	sanm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The price of receivables sold expressed as a percentage of the face value of the receivables

+ References

No definition available.

+ Details

Name:	sanm_FaceValueofReceivableSoldPercentage
Namespace Prefix:	sanm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction, at the date of derecognition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118948506&loc=SL51823488-111719

+ Details

Name:	us-gaap_TransferOfFinancialAssetsAccountedForAsSalesAmountDerecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_TransferOfFinancialAssetsAccountedForAsSalesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	sanm_SaleofAccountsReceivableAxis=sanm_RPAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: