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Stock-Based Compensation - Allocation of Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 27, 2019 | Oct. 28, 2018 | Oct. 27, 2019 | Oct. 28, 2018
Share-based Compensation |  |  |  |
Total | $ 223 | $ 140 | $ 624 | $ 400
Cost of revenue |  |  |  |
Share-based Compensation |  |  |  |
Total | 15 | 5 | 27 | 21
Research and development |  |  |  |
Share-based Compensation |  |  |  |
Total | 141 | 88 | 400 | 237
Sales, general and administrative |  |  |  |
Share-based Compensation |  |  |  |
Total | $ 67 | $ 47 | $ 197 | $ 142

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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 + Details
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