Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 26, 2014	Jan. 27, 2013
Numerator:
Net income (in dollars)	$ 253	$ 34
Denominator:
Weighted average common shares outstanding (in shares)	1,206	1,198
Effect of dilutive stock options, restricted stock units and employee stock purchase plan shares	19	14
Denominator for diluted earnings per share (in shares)	1,225	1,212
Basic and diluted earnings per share (in dollars per share)	$ 0.21	$ 0.03
Potentially dilutive securities (in shares)	1	8