GOODWILL (Details) $ in Millions	3 Months Ended
	Dec. 31, 2025 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 1,696.5
Segment recast	0.0
Currency translation	4.4
Ending balance	1,700.9
Customized Polymer Solutions
Goodwill [Roll Forward]
Beginning balance	622.4
Segment recast	0.0
Currency translation	2.4
Ending balance	624.8
Durable Metal Solutions
Goodwill [Roll Forward]
Beginning balance	418.7
Segment recast	31.3
Currency translation	1.5
Ending balance	451.5
Sustainable Fiber Solutions
Goodwill [Roll Forward]
Beginning balance	475.9
Segment recast	52.4
Currency translation	0.1
Ending balance	528.4
Innovative Closure Solutions
Goodwill [Roll Forward]
Beginning balance	179.5
Segment recast	(83.7)
Currency translation	0.4
Ending balance	$ 96.2