Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 27, 2014	Jul. 28, 2013	Jul. 27, 2014	Jul. 28, 2013
Numerator:
Net income	$ 301	$ 168	$ 816	$ 73
Denominator:
Weighted average common shares outstanding (in shares)	1,218	1,203	1,213	1,201
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	15	17	17	17
Denominator for diluted earnings per share	1,233	1,220	1,230	1,218
Basic earnings per share (in dollars per share)	$ 0.25	$ 0.14	$ 0.67	$ 0.06
Diluted earnings per share (in dollars per share)	$ 0.24	$ 0.14	$ 0.66	$ 0.06
Potentially dilutive securities (in shares)	0	1	0	1