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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
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Nov. 04, 2018 | Oct. 29, 2017 | Oct. 30, 2016
Allowance for Distributor Credit [Member] |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Period Start | [1] | $ 177 | $ 252 | $ 66
Valuation Allowance and Reserves Additions | [1] | 882 | 1,176 | 1,216
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction | [1] | (908) | (1,251) | (1,030)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Period End | [1] | 151 | 177 | 252
Allowance for Doubtful Accounts and Sales Returns [Member] |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Period Start | [2] | 31 | 40 | 9
Valuation Allowance and Reserves Additions | [2] | 116 | 49 | 142
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction | [2] | (135) | (58) | (111)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Period End | [2] | 12 | 31 | 40
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Period Start | [3] | 1,447 | 1,003 | 147
Valuation Allowance and Reserves Additions | [3] | 314 | 460 | 882
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction | [3] | (414) | (16) | (26)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Period End | [3] | $ 1,347 | $ 1,447 | $ 1,003
[1] | Distributor credit allowances relate to price adjustments and other allowances.
[2] | Other accounts receivable allowances primarily include sales returns and allowance for doubtful accounts.
[3] | The decrease in the fiscal year 2018 valuation allowance resulted from restructuring activities offset by increases due to the Brocade Merger and in foreign deferred tax assets arising from foreign credits and losses not expected to be realized. The increase in the fiscal year 2017 valuation allowances resulted from foreign deferred tax assets arising from foreign losses not expected to be realized.

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses or acquired through business combinations with no charge to costs and expenses. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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