RESTRUCTURING AND RELATED CHARGES - Rollforward of Restructuring Accrual (Details) $ in Millions	9 Months Ended
	Jul. 04, 2021 USD ($)
Restructuring Reserve [Roll Forward]
Accrual balance at beginning of period	$ 10.5
Provisions	11.4
Cash expenditures	(15.1)
Non-cash items	0.1
Accrual balance at ending of period	6.9
Termination Benefits
Restructuring Reserve [Roll Forward]
Accrual balance at beginning of period	4.1
Provisions	2.7
Cash expenditures	(2.1)
Non-cash items	0.0
Accrual balance at ending of period	4.7
Other Costs
Restructuring Reserve [Roll Forward]
Accrual balance at beginning of period	6.4
Provisions	8.7
Cash expenditures	(13.0)
Non-cash items	0.1
Accrual balance at ending of period	$ 2.2