Derivative Instruments and Hedging Activities (Derivatives Not Designated as Hedging Instruments) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss)  Recognized in Consolidated Statement of Operations	$ (4)	$ (8)	$ (5)
Foreign exchange contracts | General and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss)  Recognized in Consolidated Statement of Operations	0	(8)	(5)
Foreign exchange contracts | Interest and other income, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss)  Recognized in Consolidated Statement of Operations	(10)	0	0
Total return swap | Interest and other income, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss)  Recognized in Consolidated Statement of Operations	(1)	0	0
Total return swap | Cost of products sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss)  Recognized in Consolidated Statement of Operations	1	0	0
Total return swap | Operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss)  Recognized in Consolidated Statement of Operations	$ 6	$ 0	$ 0