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Business Combinations (Purchase Price Allocation) (Details) - USD ($)
$ in Millions
Oct. 28, 2018
Oct. 29, 2017
Business Acquisition [Line Items]    
Goodwill $ 3,368 $ 3,368
2017 Acquisitions    
Business Acquisition [Line Items]    
Fair value of net assets acquired   23
Goodwill   55
Purchased technology   31
Purchase price allocated   $ 109