Industry Segment Operations (Depreciation and Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 26, 2014	Oct. 27, 2013	Oct. 28, 2012
Segment Reporting, Other Significant Reconciling Item [Line Items]
Depreciation and amortization	$ 375	$ 410	$ 422
Operating Segments [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Depreciation and amortization	293	303	319
Shared facilities and information technology assets [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Depreciation and amortization	$ 82	$ 107	$ 103