Goodwill, Purchased Technology and Other Intangible Assets (Purchased Technology and Intangible Assets) (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 25, 2020
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	$ 104	$ 153
Purchased technology, net
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	46	75
Intangible Assets
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	$ 58	$ 78