Note 9 Restructuring (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2020 USD ($)	Mar. 30, 2019 USD ($)	Mar. 28, 2020 USD ($)	Mar. 30, 2019 USD ($)	Sep. 28, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 8,356	$ 3,012	$ 17,516	$ 5,151
Restructuring Reserve	$ 7,000		7,000		$ 5,000
IMS
Restructuring Cost and Reserve [Line Items]
Restructuring Expense (Recovery), net				(4,000)
Restructuring Charges			9,000
CPS
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			6,000	9,000
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ 3,000
Q1 FY20 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Completion Date			Oct. 03, 2020
Expected Number of Positions Eliminated	300		1,750
Restructuring Charges	$ 4,769	0	$ 11,505	0
Q1 FY20 Plan [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4,725	0	11,453	0
Q1 FY20 Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	44	0	52	0
Other plans [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3,587	$ 3,012	6,011	$ 5,151
Minimum [Member] | Q1 FY20 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	10,000		10,000
Maximum [Member] | Q1 FY20 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 20,000		$ 20,000