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FAIR VALUE - Balance Sheet Marketable Securities (Details) - USD ($) $ in Millions | Dec. 30, 2022 | Sep. 30, 2022
--- | --- | ---
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | $ 19.1 | $ 20.0
Cash and cash equivalents |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities |  | 3.3
Prepaid expenses and other current assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 16.7 | 14.5
Other assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 2.4 | 2.2
Commercial paper |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 4.9 | 5.9
Commercial paper | Cash and cash equivalents |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities |  | 0.0
Commercial paper | Prepaid expenses and other current assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 4.9 | 5.9
Commercial paper | Other assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 0.0 | 0.0
Corporate notes/bonds |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 3.6 | 3.6
Corporate notes/bonds | Cash and cash equivalents |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities |  | 0.0
Corporate notes/bonds | Prepaid expenses and other current assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 2.4 | 1.9
Corporate notes/bonds | Other assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 1.2 | 1.7
Government agencies |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 0.3 | 0.3
Government agencies | Cash and cash equivalents |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities |  | 0.0
Government agencies | Prepaid expenses and other current assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 0.3 | 0.3
Government agencies | Other assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 0.0 | 0.0
U.S. Treasury bills |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 10.3 | 10.2
U.S. Treasury bills | Cash and cash equivalents |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities |  | 3.3
U.S. Treasury bills | Prepaid expenses and other current assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | 9.1 | 6.4
U.S. Treasury bills | Other assets |  |
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] |  |
Total marketable debt securities | $ 1.2 | $ 0.5

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- Definition Amount of investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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