OTHER FINANCIAL INFORMATION - Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Other Financial Information [Abstract]
Gain on equity investments	$ 8.6	$ 1.4
Net foreign currency exchange gain (loss)	(3.8)	2.4
Other, net	0.9	0.6
Total other income, net	$ 5.7	$ 4.4