RESTRUCTURING AND RELATED CHARGES - Summary of Restructuring and Related Charges (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 02, 2022	Jan. 03, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 17.4	$ 9.0
Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	0.3	0.1
Operating expense
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	17.1	8.9
Global productivity improvement program
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	1.8	9.0
GPC Edwardsville 3PL transition
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	10.3	0.0
SAP S/4 HANA ERP transformation
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	2.9	0.0
Other restructuring activities
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 2.4	$ 0.0