Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 8.0	$ (9.9)
Other comprehensive income (loss), net of tax:
Foreign currency translation	(9.2)	(28.3)
Interest rate derivative	4.6	0.0
Minimum pension liabilities	28.1	1.9
Other comprehensive income (loss), net of tax	23.5	(26.4)
Comprehensive income (loss)	31.5	(36.3)
Comprehensive income (loss) attributable to noncontrolling interests	0.9	(2.4)
Comprehensive income (loss) attributable to Greif, Inc.	$ 30.6	$ (33.9)