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Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions	Jan. 31, 2021	Nov. 01, 2020
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 36,146	$ 36,136
Accumulated amortization	(20,752)	(19,379)
Finite-lived intangible assets, net book value	15,394	16,757
Intangible assets, gross	36,171	36,161
Intangible assets, net book value	15,419	16,782
In-process research and development
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
In-process research and development	25	25
Purchased technology
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	24,126	24,119
Accumulated amortization	(14,797)	(13,925)
Finite-lived intangible assets, net book value	9,329	10,194
Customer contracts and related relationships
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	8,392	8,389
Accumulated amortization	(3,525)	(3,179)
Finite-lived intangible assets, net book value	4,867	5,210
Order backlog
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,579	2,579
Accumulated amortization	(1,965)	(1,836)
Finite-lived intangible assets, net book value	614	743
Trade names
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	797	797
Accumulated amortization	(341)	(322)
Finite-lived intangible assets, net book value	456	475
Other
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	252	252
Accumulated amortization	(124)	(117)
Finite-lived intangible assets, net book value	$ 128	$ 135

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