Goodwill, Purchased Technology and Other Intangible Assets (Schedule of Purchased Technology and Intangible Assets) (Details) - USD ($) $ in Millions	Jan. 27, 2019	Oct. 28, 2018
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	$ 199	$ 213
Purchased technology, net
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	99	109
Intangible assets
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	$ 100	$ 104