ACQUISITIONS AND DIVESTITURES - Additional Information (Details) $ in Millions			3 Months Ended		6 Months Ended	9 Months Ended
	Jun. 11, 2019 USD ($)	Feb. 11, 2019 USD ($)	Jul. 31, 2019 USD ($)	Jul. 31, 2018 USD ($)	Jul. 31, 2019 USD ($)	Jul. 31, 2019 USD ($)	Jul. 31, 2018 USD ($) Divestiture	Oct. 31, 2018 USD ($)
Business Acquisition [Line Items]
Long-term debt			$ 2,786.0		$ 2,786.0	$ 2,786.0		$ 884.1
Other long-term assets			98.1		98.1	98.1		$ 100.4
Net income			67.5	$ 72.0		124.4	$ 184.0
Proceeds from divestitures						0.8	0.5
Notes receivable recorded from sale of business				$ 2.9			$ 2.9
Number of divestitures (in divestitures) | Divestiture							0
Tholu B.V.
Business Acquisition [Line Items]
Total consideration	$ 52.2
Cash consideration	25.1
Deferred payments	$ 29.2
Percentage acquired	100.00%
Goodwill	$ 22.3
Caraustar
Business Acquisition [Line Items]
Cash consideration		$ 1,834.9			1,834.9
Payments to acquire business		1,834.9
Acquisition-related cost		62.1
Amount recognized in income statement						34.0
Long-term debt		18.7
Other long-term assets		9.4
Goodwill		$ 752.5	769.4		769.4	769.4
Sales attributable to Grief			320.3			613.7
Rigid Industrial Packaging & Services
Business Acquisition [Line Items]
Loss on disposal						3.0
Proceeds from divestitures						1.6	$ 0.9
Fair Value Adjustment to Inventory | Caraustar
Business Acquisition [Line Items]
Net income							$ 9.0
Other current liabilities | Tholu B.V.
Business Acquisition [Line Items]
Deferred payments	2.5
Other Noncurrent Liabilities | Tholu B.V.
Business Acquisition [Line Items]
Deferred payments	$ 26.7
Debt | Caraustar
Business Acquisition [Line Items]
Acquisition-related cost			$ 28.1		$ 28.1	$ 28.1