CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 93.1	$ 18.6
Other comprehensive income (loss), net of tax:
Foreign currency translation	51.3	(31.5)
Derivative financial instruments	(25.7)	11.8
Minimum pension liabilities	(2.4)	3.1
Other comprehensive income (loss), net of tax	23.2	(16.6)
Comprehensive income	116.3	2.0
Comprehensive income attributable to noncontrolling interests	3.5	4.0
Comprehensive income (loss) attributable to Greif, Inc.	$ 112.8	$ (2.0)