CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 146.1	$ 118.4	$ 291.4	$ 303.3
Other comprehensive income (loss), net of tax:
Foreign currency translation	[1]	(30.8)	(15.5)	1.8	18.7
Derivative financial instruments		1.2	(0.6)	37.1	10.8
Minimum pension liabilities		2.7	2.2	9.2	49.3
Other comprehensive income (loss), net of tax		(26.9)	(13.9)	48.1	78.8
Comprehensive income		119.2	104.5	339.5	382.1
Comprehensive income attributable to noncontrolling interests		3.1	5.6	7.4	17.9
Comprehensive income attributable to Greif, Inc.		$ 116.1	$ 98.9	$ 332.1	$ 364.2

[1] Nine months ended July 31, 2022 balance includes $113.1 million release of foreign currency translation from business divestment.