Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Details 6) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 27, 2013	Oct. 28, 2012	Oct. 30, 2011
Shares
Beginning Balance	21	30	51
Granted and assumed in Varian acquisition	1	5	0
Exercised	(11)	(4)	(5)
Canceled and forfeited	(5)	(10)	(16)
Ending Balance	6	21	30
Exercisable, Shares	5	20	24
Weighted Average Exercise Price
Beginning Balance (in dollars per share)	$ 10.53	$ 13.05	$ 15.04
Granted and assumed in Varian acquisition (in dollars per share)	$ 15.06	$ 4.85	$ 0.00
Exercised (in dollars per share)	$ 8.16	$ 7.30	$ 9.21
Canceled and forfeited (in dollars per share)	$ 17.62	$ 16.76	$ 20.28
Ending Balance (in dollars per share)	$ 9.12	$ 10.53	$ 13.05
Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 7.90	$ 10.71	$ 14.23