FAIR VALUE - Summary of Marketable Securities (Details) - USD ($) $ in Millions	Dec. 30, 2022	Sep. 30, 2022
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