Cash, Cash Equivalents and Investments (Contractual Maturities) (Details) $ in Millions	Oct. 30, 2016 USD ($)
Cash and Cash Equivalents [Abstract]
Due in one year or less, Cost	$ 329
Due after one through five years, Cost	552
No single maturity date, Cost	349
Investments maturities amortized, Cost	1,230
Due in one year or less, Estimated Fair Value	329
Due after one through five years, Estimated Fair Value	553
No single maturity date, Estimated Fair Value	390
Investments maturities, Estimated Fair Value	$ 1,272