Cash, Cash Equivalents and Investments (Details 3) (USD $) In Millions, unless otherwise specified	Apr. 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	$ 61	$ 109
In Loss Position for Less Than 12 Months, Gross Unrealized Losses	7	2
Total, Fair Value	61	109
Total, Gross Unrealized Losses	7	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	19
In Loss Position for Less Than 12 Months, Gross Unrealized Losses	6
Total, Fair Value	19
Total, Gross Unrealized Losses	6
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