Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Millions	Apr. 30, 2017	Oct. 30, 2016
Contractual maturities of investments
Due in one year or less, Cost	$ 1,777
Due after one through five years, Cost	531
No single maturity date, Cost	390
Short-term and long-term investments, Cost	2,698	$ 1,230
Due in one year or less, Estimated Fair Value	1,778
Due after one through five years, Estimated Fair Value	530
No single maturity date, Estimated Fair Value	453
Investments maturities, Estimated Fair Value	$ 2,761	$ 1,272