Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Aug. 01, 2021	Aug. 02, 2020	Aug. 01, 2021	Aug. 02, 2020	Nov. 01, 2020
Income Tax Contingency [Line Items]
Benefit from income taxes	$ (150)	$ (96)	$ (151)	$ (331)
Unrecognized tax benefits	4,893		4,893		$ 4,748
Unrecognized tax benefits, Accrued interest and penalties	354		354		340
Unrecognized tax benefits, including accrued interest and penalties, that would impact effective tax rate	5,247		5,247		$ 5,088
Possible change of existing unrecognized tax benefits	$ 277		$ 277

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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