Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Oct. 01, 2021
Deferred tax liabilities:
Prepaid insurance	$ (39,700)	$ (15,600)
Property, plant and equipment	(59,200)	(38,600)
Intangible assets	(4,700)	(5,300)
Deferred tax assets:
Inventory	21,400	15,800
Accrued compensation and benefits	11,600	12,700
Product returns, allowances and warranty	1,500	900
Share-based and other deferred compensation	27,800	31,800
Net operating loss carry forwards	14,000	7,100
Federal tax credits	17,000	17,000
State tax credits	138,000	126,900
Deferred Tax Assets, Property, Plant and Equipment	31,400	35,800
Deferred Tax Assets, Goodwill and Intangible Assets	20,400	0
Other - net	8,700	15,000
Deferred tax assets	348,600	350,500
Less valuation allowance	(161,400)	(150,000)
Net deferred tax assets	187,200	200,500
Deferred Tax Liabilities, Net	155,100	99,900
Total deferred tax assets	32,100	100,600
Deferred Tax Liabilities, Leasing Arrangements	(51,500)	(40,400)
deferred tax asset, leasing arrangements	56,800	45,400
Deferred Tax Assets, Prepaids	0	42,100
Deferred Income Tax Assets, Net	52,700	119,500
Other Noncurrent Liabilities [Member]
Deferred tax assets:
Deferred Income Tax Liabilities, Net	(20,600)	(18,900)
Income Taxes [Line Items]
Deferred Income Tax Liabilities, Net	$ 20,600	$ 18,900