Cash, Cash Equivalents and Investments (Details 1) (USD $)	3 Months Ended			9 Months Ended
	Jul. 27, 2014		Jul. 28, 2013	Jul. 27, 2014		Jul. 28, 2013
Contractual maturities of investments
Due in one year or less, Cost	$ 134,000,000			$ 134,000,000
Due after one through five years, Cost	571,000,000			571,000,000
No single maturity date, Cost	364,000,000	[1]		364,000,000	[1]
Investments maturities, Cost	1,069,000,000			1,069,000,000
Due in one year or less, Estimated Fair Value	134,000,000			134,000,000
Due after one through five years, Estimated Fair Value	573,000,000			573,000,000
No single maturity date, Estimated Fair Value	395,000,000	[1]		395,000,000	[1]
Investments maturities, Estimated Fair Value	1,102,000,000			1,102,000,000
Gross realized gains	9,000,000			21,000,000
Marketable securities [Member]
Contractual maturities of investments
Investment impairments	0		0	0		0
Equity investments in privately-held companies [Member]
Contractual maturities of investments
Investment impairments	$ 7,000,000		$ 3,000,000	$ 13,000,000		$ 5,000,000

[1] Securities with no single maturity date include publicly-traded and privately-held equity securities, and asset-backed and mortgage-backed securities.