RESTRUCTURING CHARGES - Amounts Expected to be Incurred, Amounts Incurred, and Amounts Remaining to Be Incurred (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	$ 12.6		$ 12.6
Amounts Incurred During the Six Months Ended April 30, 2024	(6.8)	$ 2.4	(1.1)	$ 4.8
Amounts Remaining to be Incurred	13.7		13.7
Employee separation costs
Restructuring and Related Costs [Line Items]
Amounts Incurred During the Six Months Ended April 30, 2024	0.4		3.3
Other restructuring costs
Restructuring and Related Costs [Line Items]
Amounts Incurred During the Six Months Ended April 30, 2024	1.8		4.6
Global Industrial Packaging
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	(2.2)		(2.2)
Amounts Incurred During the Six Months Ended April 30, 2024			(7.7)
Amounts Remaining to be Incurred	5.5		5.5
Global Industrial Packaging | Employee separation costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	(4.2)		(4.2)
Amounts Incurred During the Six Months Ended April 30, 2024			(8.0)
Amounts Remaining to be Incurred	3.8		3.8
Global Industrial Packaging | Other restructuring costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	2.0		2.0
Amounts Incurred During the Six Months Ended April 30, 2024			0.3
Amounts Remaining to be Incurred	1.7		1.7
Paper Packaging & Services
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	14.8		14.8
Amounts Incurred During the Six Months Ended April 30, 2024			6.6
Amounts Remaining to be Incurred	8.2		8.2
Paper Packaging & Services | Employee separation costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	2.5		2.5
Amounts Incurred During the Six Months Ended April 30, 2024			2.3
Amounts Remaining to be Incurred	0.2		0.2
Paper Packaging & Services | Other restructuring costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	12.3		12.3
Amounts Incurred During the Six Months Ended April 30, 2024			4.3
Amounts Remaining to be Incurred	$ 8.0		$ 8.0