Acquisitions 3 (Details) - USD ($) $ in Millions		3 Months Ended
	Nov. 04, 2019	Feb. 02, 2020
Customer contracts and related relationships
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Weighted-average amortization periods (in years)		5 years
Order backlog
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Weighted-average amortization periods (in years)		3 years
Symantec Asset Purchase [Member]
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Total identified intangible assets	$ 5,413
Symantec Asset Purchase [Member] | Developed technology
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Identified finite-lived intangible assets	$ 2,902
Weighted-average amortization periods (in years)	5 years
Symantec Asset Purchase [Member] | Customer contracts and related relationships
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Identified finite-lived intangible assets	$ 2,410
Weighted-average amortization periods (in years)	5 years
Symantec Asset Purchase [Member] | Order backlog
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Identified finite-lived intangible assets	$ 11
Weighted-average amortization periods (in years)	3 years
Symantec Asset Purchase [Member] | Trade name and other
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Identified finite-lived intangible assets	$ 90
Weighted-average amortization periods (in years)	6 years