Goodwill, Purchased Technology and Other Intangible Assets (Purchased Technology and Intangible Assets) (Details) - USD ($) $ in Millions	Oct. 27, 2019	Oct. 28, 2018
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	$ 156	$ 213
Purchased technology, net
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	71	109
Intangible Assets
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	$ 85	$ 104