Goodwill, Purchased Technology and Other Intangible Assets - Schedule of Purchased Technology and Intangible Assets (Details) - USD ($) $ in Millions	Jul. 26, 2020	Oct. 27, 2019
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	$ 157	$ 156
Purchased technology, net
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	78	71
Other Intangible Assets
Summary of Purchased Technology and Intangible Assets [Line Items]
Finite lived assets	$ 79	$ 85