Cash, Cash Equivalents and Investments (Details 3) (USD $) In Millions, unless otherwise specified	Jul. 29, 2012	Oct. 30, 2011
Gross Unrealized Losses and the Fair Market Value of Investments
In Loss Position for Less Than 12 Months, Fair Value	$ 56	$ 109
In Loss Position for Less Than 12 Months, Gross Unrealized Losses	13	2
Total, Fair Value	56	109
Total, Gross Unrealized Losses	13	2
Asset-backed and mortgage-backed securities [Member]
Gross Unrealized Losses and the Fair Market Value of Investments
In Loss Position for Less Than 12 Months, Fair Value	42	77
In Loss Position for Less Than 12 Months, Gross Unrealized Losses	1	1
Total, Fair Value	42	77
Total, Gross Unrealized Losses	1	1
Publicly traded equity securities [Member]
Gross Unrealized Losses and the Fair Market Value of Investments
In Loss Position for Less Than 12 Months, Fair Value	14
In Loss Position for Less Than 12 Months, Gross Unrealized Losses	12
Total, Fair Value	14
Total, Gross Unrealized Losses	12
Commercial paper, corporate bonds and medium-term notes [Member]
Gross Unrealized Losses and the Fair Market Value of Investments
In Loss Position for Less Than 12 Months, Fair Value		32
In Loss Position for Less Than 12 Months, Gross Unrealized Losses		1
Total, Fair Value		32
Total, Gross Unrealized Losses		$ 1