GOODWILL AND INTANGIBLE ASSETS - Changes in the Carrying Amount of Goodwill by Reporting Segment (Details) $ in Millions	3 Months Ended
	Dec. 31, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill at beginning of period	$ 854.7
Foreign currency impact	5.4
Goodwill at end of period	860.1
GPC
Goodwill [Roll Forward]
Goodwill at beginning of period	512.1
Foreign currency impact	5.4
Goodwill at end of period	517.5
H&G
Goodwill [Roll Forward]
Goodwill at beginning of period	342.6
Foreign currency impact	0.0
Goodwill at end of period	$ 342.6