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EMPLOYEE STOCK PLANS - Schedule of Valuation Assumptions (Details) - $ / shares | 12 Months Ended
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Sep. 27, 2024 | Sep. 29, 2023 | Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award |  |  |
Expected dividend | 0.00% |  |
Employee Stock Option Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |
Expected term (in years) | 6 years 1 month 6 days | 6 years 10 months 24 days | 7 years
Risk-free interest rate | 3.80% | 3.60% | 1.40%
Expected volatility | 45.70% | 43.90% | 42.70%
Expected dividend | 0.00% | 0.00% | 0.00%
Weighted average fair value at grant date (in USD per share) | $ 5.85 | $ 9.75 | $ 12.07
Employee Stock Purchase Plans |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |
Expected term (in years) | 6 months | 6 months | 4 months 24 days
Risk-free interest rate | 5.20% | 4.80% | 1.60%
Expected volatility | 34.20% | 34.80% | 33.60%
Expected dividend | 0.00% | 0.00% | 0.00%
Weighted average fair value at grant date (in USD per share) | $ 3.97 | $ 4.96 | $ 5.41

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. 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