Industry Segment Operations (Capital Expenditures) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2015	Oct. 26, 2014	Oct. 27, 2013
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	$ 215	$ 241	$ 197
Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	143	146	132
Shared facilities and information technology assets
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	$ 72	$ 95	$ 65