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Stock-Based Compensation - Allocation of Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 26, 2020	Apr. 28, 2019
Share-based Compensation
Total	$ 224	$ 178
Cost of revenue
Share-based Compensation
Total	21	4
Research and development
Share-based Compensation
Total	134	114
Sales, general and administrative
Share-based Compensation
Total	$ 69	$ 60

X

- 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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- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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