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Equity Method Investments - Earnings from Equity Interest (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Schedule of Equity Method Investments [Line Items]
Earnings from equity interests, net of taxes	$ 292	$ 211	$ 167
Basis difference amortization	(109)	(145)	(152)
Elimination of profit on intra-entity sales adjustment	(3)	1	5
Earnings from equity interests	180	67	20
H3C
Schedule of Equity Method Investments [Line Items]
Earnings from equity interests, net of taxes	260
Earnings from equity interests	180	$ 67	$ 20
Other Venture Investments
Schedule of Equity Method Investments [Line Items]
Earnings from equity interests, net of taxes	$ 32

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