Earnings (loss) Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 27, 2014	Apr. 28, 2013	Apr. 27, 2014	Apr. 28, 2013
Numerator:
Net income (loss)	$ 262	$ (129)	$ 515	$ (95)
Denominator:
Weighted average common shares outstanding (in shares)	1,216	1,203	1,211	1,200
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares (in shares)	13	0	16	0
Denominator for diluted earnings (loss) per share (in shares)	1,229	1,203	1,227	1,200
Basic earnings (loss) per share (in dollars per share)	$ 0.22	$ (0.11)	$ 0.43	$ (0.08)
Diluted earnings (loss) per share (in dollars per share)	$ 0.21	$ (0.11)	$ 0.42	$ (0.08)
Potentially dilutive securities (in shares)	0	50	0	50