Cash, Cash Equivalents and Investments (Details 1) (USD $)	3 Months Ended
	Jan. 26, 2014		Jan. 27, 2013
Schedule of Investments [Line Items]
Gross realized gains	$ 12,000,000
Contractual maturities of investments
Due in one year or less, Cost	127,000,000
Due after one through five years, Cost	489,000,000
No single maturity date, Cost	332,000,000	[1]
Investments maturities, Cost	948,000,000
Due in one year or less, Estimated Fair Value	128,000,000
Due after one through five years, Estimated Fair Value	491,000,000
No single maturity date, Estimated Fair Value	359,000,000	[1]
Investments maturities, Estimated Fair Value	978,000,000
Marketable securities [Member]
Contractual maturities of investments
Investment impairments	0		0
Equity investments in privately-held companies [Member]
Contractual maturities of investments
Investment impairments	$ 3,000,000		$ 0

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