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, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	$ 26.3		$ 26.3
Amounts Incurred During the six months ended April 30, 2020	4.4	$ 7.5	7.7	$ 11.2
Amounts Remaining to be Incurred	18.6		18.6
Employee Separation Costs
Restructuring and Related Costs [Line Items]
Amounts Incurred During the six months ended April 30, 2020	2.4		5.1
Other Costs
Restructuring and Related Costs [Line Items]
Amounts Incurred During the six months ended April 30, 2020	2.0		2.6
Rigid Industrial Packaging & Services
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	17.5		17.5
Amounts Incurred During the six months ended April 30, 2020			3.8
Amounts Remaining to be Incurred	13.7		13.7
Rigid Industrial Packaging & Services | Employee Separation Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	13.7		13.7
Amounts Incurred During the six months ended April 30, 2020			2.6
Amounts Remaining to be Incurred	11.1		11.1
Rigid Industrial Packaging & Services | Other Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	3.8		3.8
Amounts Incurred During the six months ended April 30, 2020			1.2
Amounts Remaining to be Incurred	2.6		2.6
Flexible Products & Services
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	3.7		3.7
Amounts Incurred During the six months ended April 30, 2020			1.2
Amounts Remaining to be Incurred	2.5		2.5
Flexible Products & Services | Employee Separation Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	1.4		1.4
Amounts Incurred During the six months ended April 30, 2020			0.5
Amounts Remaining to be Incurred	0.9		0.9
Flexible Products & Services | Other Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	2.3		2.3
Amounts Incurred During the six months ended April 30, 2020			0.7
Amounts Remaining to be Incurred	1.6		1.6
Paper Packaging & Services
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	5.1		5.1
Amounts Incurred During the six months ended April 30, 2020			2.7
Amounts Remaining to be Incurred	2.4		2.4
Paper Packaging & Services | Employee Separation Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	2.4		2.4
Amounts Incurred During the six months ended April 30, 2020			2.0
Amounts Remaining to be Incurred	0.4		0.4
Paper Packaging & Services | Other Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	2.7		2.7
Amounts Incurred During the six months ended April 30, 2020			0.7
Amounts Remaining to be Incurred	$ 2.0		$ 2.0