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SHARE-BASED COMPENSATION EXPENSE - Narrative (Details) shares in Millions, $ in Millions |  | 9 Months Ended
--- | --- | ---
Jan. 29, 2021 shares | Jul. 31, 2021 USD ($) purchase_period
ESPP |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Offer period |  | 12 months
Number of purchase periods | purchase_period |  | 2
Purchase period |  | 6 months
Purchase price of common stock |  | 85.00%
Increase in number of shares authorized (in shares) | shares | 8.7 |
Restricted Stock Units (RSUs) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized share-based compensation | $ |  | $ 160.6
Weighted-average period for recognition of share-based compensation (in years) |  | 1 year 6 months 29 days

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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