Stock-Based Compensation - Aggregate Unearned Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended
Oct. 28, 2018	Jan. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate amount of unearned stock-based compensation expense related to equity awards, adjusted for estimated forfeitures	$ 1,608	$ 1,091
RSUs, PSUs, and Market-based PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated weighted average amortization period	2 years 4 months 18 days	2 years 3 months 7 days
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated weighted average amortization period	10 months 24 days	8 months 6 days

Unrecognized cost of unvested share-based compensation awards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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