Note 8 Restructuring (Details) $ in Thousands	3 Months Ended
	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)	Sep. 29, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs	$ 2,139	$ 23,542
Restructuring Reserve	25,000		$ 24,000
IMS
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs	(4,000)	19,000
CPS
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs	6,000	4,000
Q1 FY18 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Expected cost prior to reimbursement	35,000
Restructuring Expense (Recovery) prior to reimbursement	2,097	23,301
Expected Severance Reimbursement	$ 10,000
Initiation Date	Dec. 30, 2017
Completion Date	Dec. 31, 2019
Expected Number of Positions Eliminated	2,900
Severance Reimbursement	$ 0	0
Other Receivables	7,000
Expected Cost	25,000
Restructuring and other costs	2,097	23,301
Q1 FY18 Plan [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Expected Cost	27,700
Restructuring Charges	393	23,301
Q1 FY18 Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Expected Cost	7,300
Restructuring Charges	1,704	0
Other plans [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs	$ 42	$ 241