Goodwill, Purchased Technology and Other Intangible Assets (Schedule of Purchased Technology and Intangible Assets) (Details) - USD ($) $ in Millions	Jul. 28, 2019	Oct. 28, 2018
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	$ 170	$ 213
Purchased technology, net
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	80	109
Other Intangible Assets
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	$ 90	$ 104