v3.22.4
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