Note 5 Leases (Detail) $ in Thousands	9 Months Ended
	Jun. 27, 2020 USD ($)
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Right Of Use Asset, Accumulated Amortization	$ 12,000
Operating Lease, Liability	$ 55,605
Operating Lease, Weighted Average Remaining Lease Term	6 years 10 months 17 days
Operating Lease, Weighted Average Discount Rate, Percent	3.13%
Other Assets [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Right-of-Use Asset	$ 55,462	[1]
Accrued Liabilities [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Liability, Current	17,833
Other Noncurrent Liabilities [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Liability, Noncurrent	37,772
Liabilities, Total [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Liability	$ 55,605

[1] Net of accumulated amortization of $12 million.