CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		12 Months Ended
		Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 379.1	$ 394.0	$ 413.2
Other comprehensive income (loss), net of tax:
Foreign currency translation	[1]	(1.1)	(27.9)	(1.6)
Derivative financial instruments		(1.1)	76.4	21.1
Minimum pension liabilities		(11.9)	(1.1)	50.4
Other comprehensive (loss) income, net of tax		(14.1)	47.4	69.9
Comprehensive income		365.0	441.4	483.1
Comprehensive income attributable to noncontrolling interests		20.0	10.5	21.4
Comprehensive income attributable to Greif, Inc.		$ 345.0	$ 430.9	$ 461.7

[1] Year ended October 31, 2022 amount includes $113.1 million release of foreign currency translation from business divestment.