Note 14 Prior Period Adjustments (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Sep. 29, 2018	Sep. 29, 2018
Prior Period Adjustment [Abstract]
Error Correction	$ 12.5
Quantify Prior Period Misstatements Corrected in Current Year Financial Statements		$ 11.0

Pre-tax adjustment for corrections of prior year errors in the current year financial statements and errors occurred in prior quarters of the current year to the current year financial statements.

No definition available.

Name:	sanm_ErrorCorrection
Namespace Prefix:	sanm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration