Income Taxes, Net Deferred Income Tax Liability (Details) - USD ($) $ in Millions	Sep. 30, 2017	Oct. 01, 2016
Deferred Tax Assets [Abstract]
Allowance for doubtful accounts	$ 7	$ 7
Deferred gain on sale-leaseback	10	11
Accrued liabilities and reserves	89	129
Inventories	6	10
Net operating loss carryforward	292	371
Alternative minimum tax (AMT) credit carryforward	11	10
Research and development credit carryforward	18	36
Federal and state tax credits	9	2
Other	14	6
Total deferred tax assets	456	582
Valuation allowance	(93)	(82)
Total deferred tax assets, net of valuation allowance	363	500
Deferred Tax Liabilities [Abstract]
Property, plant and equipment	277	282
Intangible assets	475	435
Debt extinguishment	27	53
Other	3	2
Total deferred tax liabilities	782	772
Net deferred tax liability	$ (419)	$ (272)