GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

11 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill by Segment

The following table summarizes the changes in the carrying amount of goodwill by reportable segment for the years ended September 30, 2025 (11-month) and October 31, 2024:

(in millions)	Global Industrial Packaging		Paper Packaging & Services		Customized Polymer Solutions		Durable Metal Solutions		Sustainable Fiber Solutions		Integrated Solutions		Total
Balance at October 31, 2023	$	887.6	$	507.2	$	—	$	—	$	—	$	—	$	1,394.8
Goodwill acquired	278.5		—		—		—		—		—		278.5
Goodwill allocated to divestitures	(26.1)		—		—		—		—		—		(26.1)
Currency translation	8.3		—		—		—		—		—		8.3
Balance at October 31, 2024	$	1,148.3	$	507.2	$	—	$	—	$	—	$	—	$	1,655.5
Segment recast	(1,148.3)		(507.2)		607.9		401.8		475.9		169.9		—
Goodwill acquired / Measurement period adjustment	—		—		(18.0)		—		—		—		(18.0)
Currency translation	—		—		32.5		16.9		—		9.6		59.0
Balance at September 30, 2025	$	—	$	—	$	622.4	$	418.7	$	475.9	$	179.5	$	1,696.5

Schedule of Finite-Lived Intangible Assets

The following table summarizes the carrying amount of net intangible assets by class as of September 30, 2025 and October 31, 2024:

(in millions)	Gross Intangible Assets		Accumulated Amortization		Net Intangible Assets
September 30, 2025:
Indefinite lived:
Trademarks and trade names	$	3.9	$	—	$	3.9
Definite lived:
Customer relationships	1,184.8		408.6		776.2
Trademarks and trade names	53.8		28.0		25.8
Developed technology	42.1		8.5		33.6
Other	2.1		0.7		1.4
Total	$	1,286.7	$	445.8	$	840.9
October 31, 2024:
Indefinite lived:
Trademarks and trade names	$	3.9	$	—	$	3.9
Definite lived:
Customer relationships	1,187.6		332.1		855.5
Trademarks and trade names	54.8		18.8		36.0
Developed technology	38.9		3.3		35.6
Other	2.1		0.4		1.7
Total	$	1,287.3	$	354.6	$	932.7

Schedule of Indefinite-Lived Intangible Assets

The following table summarizes the carrying amount of net intangible assets by class as of September 30, 2025 and October 31, 2024:

(in millions)	Gross Intangible Assets		Accumulated Amortization		Net Intangible Assets
September 30, 2025:
Indefinite lived:
Trademarks and trade names	$	3.9	$	—	$	3.9
Definite lived:
Customer relationships	1,184.8		408.6		776.2
Trademarks and trade names	53.8		28.0		25.8
Developed technology	42.1		8.5		33.6
Other	2.1		0.7		1.4
Total	$	1,286.7	$	445.8	$	840.9
October 31, 2024:
Indefinite lived:
Trademarks and trade names	$	3.9	$	—	$	3.9
Definite lived:
Customer relationships	1,187.6		332.1		855.5
Trademarks and trade names	54.8		18.8		36.0
Developed technology	38.9		3.3		35.6
Other	2.1		0.4		1.7
Total	$	1,287.3	$	354.6	$	932.7