Goodwill, Purchased Technology and Other Intangible Assets (Purchased Technology and Intangible Assets) (Details) - USD ($) $ in Millions	Oct. 28, 2018	Oct. 29, 2017
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	$ 213	$ 412
Purchased technology, net
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	109	288
Intangible Assets
Summary of Purchased Technology and Intangible Assets [Line Items]
Purchased technology and intangible assets	$ 104	$ 124