Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Millions	Apr. 29, 2018	Oct. 29, 2017
Contractual maturities of investments
Due in one year or less, Cost	$ 442
Due after one through five years, Cost	651
No single maturity date, Cost	529
Short-term and long-term investments, Cost	1,622	$ 3,334
Due in one year or less, Estimated Fair Value	442
Due after one through five years, Estimated Fair Value	642
No single maturity date, Estimated Fair Value	612
Investments maturities, Estimated Fair Value	$ 1,696	$ 3,409