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Note 4 Financial Instruments Note 4 Fair Value (Details)	9 Months Ended
	Jun. 29, 2019
Additional Fair Value Elements [Abstract]
Cash Equivalents	10.00%

Cash Equivalents as a percentage of cash and cash equivalent.

No definition available.

Name:	sanm_CashEquivalents
Namespace Prefix:	sanm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	us-gaap_AdditionalFairValueElementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration