FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Oct. 31, 2024	Oct. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains recorded in interest expense	$ (37.7)	$ (24.2)
Carrying value of impaired asset	34.3	1.3
Long-lived assets, fair value	20.6	0.0
Impairment of long lived assets	13.7	1.3
Proceeds from hedging derivatives	22.5	0.0
Stockholders equity	2,078.9	2,036.4	$ 2,117.5	$ 1,986.3
Accumulated Other Comprehensive Income (Loss)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Stockholders equity	(384.6)	(327.8)	(355.1)	$ (316.5)
Global Industrial Packaging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Impairment of long lived assets	1.5	1.3
Sustainable Fiber Solutions
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Impairment of long lived assets	12.2
Interest rate derivatives \| Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 1,400.0		1,400.0
Derivative, forward interest rate	2.97%
Gains reclassified to earnings	$ 5.6	9.7
Gain to be reclassified within next twelve months	16.0
Foreign Currency Forward Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	109.8		74.1
Gain recorded under fair value contracts	(4.4)	0.0
Unrealized gain (losses) on foreign currency	0.1	2.4
Cross currency swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 421.3		$ 447.6
Derivative, forward interest rate	1.67%
Gains recorded in interest expense	$ 1.6	$ 1.9
Proceeds from hedging derivatives	22.5
Cross currency swap \| Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Proceeds from hedging derivatives	11.0
Cross currency swap \| Net Investment Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Proceeds from hedging derivatives	11.5
Gain (loss) on settlement	11.3
Cross currency swap \| Net Investment Hedging \| Accumulated Other Comprehensive Income (Loss)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Stockholders equity	$ 1.8

GREIF, INC 10-Q