RESTRUCTURING CHARGES - Amounts Expected to be Incurred, Amounts Incurred, and Amounts Remaining to Be Incurred (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	$ 49.2		$ 49.2
Amounts Incurred During the nine months ended July 31, 2020	19.1	$ 9.1	26.8	$ 20.3
Amounts Remaining to be Incurred	22.4		22.4
Employee Separation Costs
Restructuring and Related Costs [Line Items]
Amounts Incurred During the nine months ended July 31, 2020	16.9		22.0
Other Costs
Restructuring and Related Costs [Line Items]
Amounts Incurred During the nine months ended July 31, 2020	2.2		4.8
Rigid Industrial Packaging & Services
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	32.7		32.7
Amounts Incurred During the nine months ended July 31, 2020			19.4
Amounts Remaining to be Incurred	13.3		13.3
Rigid Industrial Packaging & Services | Employee Separation Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	27.2		27.2
Amounts Incurred During the nine months ended July 31, 2020			17.0
Amounts Remaining to be Incurred	10.2		10.2
Rigid Industrial Packaging & Services | Other Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	5.5		5.5
Amounts Incurred During the nine months ended July 31, 2020			2.4
Amounts Remaining to be Incurred	3.1		3.1
Flexible Products & Services
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	3.8		3.8
Amounts Incurred During the nine months ended July 31, 2020			1.3
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 nine months ended July 31, 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	2.4		2.4
Amounts Incurred During the nine months ended July 31, 2020			0.8
Amounts Remaining to be Incurred	1.6		1.6
Paper Packaging & Services
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	12.7		12.7
Amounts Incurred During the nine months ended July 31, 2020			6.1
Amounts Remaining to be Incurred	6.6		6.6
Paper Packaging & Services | Employee Separation Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	4.5		4.5
Amounts Incurred During the nine months ended July 31, 2020			4.5
Amounts Remaining to be Incurred	0.0		0.0
Paper Packaging & Services | Other Costs
Restructuring and Related Costs [Line Items]
Total Amounts Expected to be Incurred	8.2		8.2
Amounts Incurred During the nine months ended July 31, 2020			1.6
Amounts Remaining to be Incurred	$ 6.6		$ 6.6