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FAIR VALUE - Summary of Marketable Securities (Details) - USD ($) $ in Millions | Dec. 30, 2022 | Sep. 30, 2022
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Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total marketable debt securities | $ 19.2 | $ 20.1
Unrealized Losses | (0.1) | (0.1)
Total marketable debt securities | 19.1 | 20.0
Commercial paper |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total marketable debt securities | 4.9 | 5.9
Unrealized Losses | 0.0 | 0.0
Total marketable debt securities | 4.9 | 5.9
Corporate notes/bonds |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total marketable debt securities | 3.7 | 3.7
Unrealized Losses | (0.1) | (0.1)
Total marketable debt securities | 3.6 | 3.6
U.S. Treasury bills |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total marketable debt securities | 10.3 | 10.2
Unrealized Losses | 0.0 | 0.0
Total marketable debt securities | 10.3 | 10.2
Government agencies |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total marketable debt securities | 0.3 | 0.3
Unrealized Losses | 0.0 | 0.0
Total marketable debt securities | $ 0.3 | $ 0.3

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