Fair Value Measurements (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 26, 2015	Jul. 31, 2016	Jul. 26, 2015	Oct. 25, 2015
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Fair value of level one and level two transfers amount	$ 0	$ 0	$ 0	$ 0
Carrying Amount [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Long-term debt	3,300,000,000		3,300,000,000		$ 3,300,000,000
Carrying Amount [Member] | Equity Investments In Privately Held Companies [Member] | Short Term And Long Term Investments [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	65,000,000		65,000,000		78,000,000
Portion at Cost [Member] | Equity Investments In Privately Held Companies [Member] | Short Term And Long Term Investments [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	58,000,000		58,000,000		70,000,000
Estimated fair value [Member] | Level 2 [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Long-term debt	3,800,000,000		3,800,000,000		3,500,000,000
Estimated fair value [Member] | Equity Investments In Privately Held Companies [Member] | Short Term And Long Term Investments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Equity investments in privately-held companies measured on non-recurring basis	$ 7,000,000		$ 7,000,000		$ 8,000,000