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Income Taxes Schedule of Unrecognized Tax Benefit (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2016 | Nov. 04, 2018 | Oct. 29, 2017 | Oct. 30, 2016
Income Tax Disclosure [Abstract] |  |  |  |
Beginning of period | $ 578 | $ 2,256 | $ 1,983 | $ 578
Lapse of statute of limitations |  | 20 | 12 | 8
Increases in balances related to tax positions taken during prior periods (including those related to acquisitions made during the year) |  | 361 | 47 | 1,325
Decreases in balances related to tax positions taken during prior periods |  | (289) | (32) | (1)
Increases in balances related to tax positions taken during current period |  | 1,726 | 391 | 138
Decreases in balances related to settlement with taxing authorities |  | 4 | 121 | 49
End of period |  | 4,030 | 2,256 | $ 1,983
Unrecognized Tax Benefits, Period Increase (Decrease) | $ 1,405 | $ 1,774 | $ 273 |

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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns and from business acquisitions. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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