Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 29, 2012	Jul. 31, 2011	Jul. 29, 2012	Jul. 31, 2011
Numerator:
Net income	$ 218	$ 476	$ 624	$ 1,471
Denominator:
Weighted average common shares outstanding (in shares)	1,257	1,318	1,282	1,321
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	11	12	10	12
Denominator for diluted earnings per share (in shares)	1,268	1,330	1,292	1,333
Basic earnings per share (in dollars per share)	$ 0.17	$ 0.36	$ 0.49	$ 1.11
Diluted earnings per share (in dollars per share)	$ 0.17	$ 0.36	$ 0.48	$ 1.10
Potentially dilutive securities (in shares)	11	17	12	17