Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 67.2	$ 44.9	$ 147.5
Other comprehensive income (loss), net of tax:
Foreign currency translation	(130.9)	(86.9)	9.3
Reclassification of cash flow hedges to earnings, net of tax benefit of $0.1 million, $0.5 million and $0.3 million, respectively	0.1	0.4	0.5
Unrealized gain (loss) on cash flow hedges, net of tax expense of $0.0 million, $0.2 million and $0.2 million, respectively		0.1	(0.2)
Minimum pension liabilities, net of tax expense of $0.5 million, tax benefit of $15.7 million and tax expense of $22.2 million, respectively	9.0	(34.7)	30.9
Other comprehensive income (loss), net of tax	(121.8)	(121.1)	40.5
Comprehensive income (loss)	(54.6)	(76.2)	188.0
Comprehensive income (loss) attributable to noncontrolling interests	(23.5)	(45.9)	4.2
Comprehensive income (loss) attributable to Greif, Inc.	$ (31.1)	$ (30.3)	$ 183.8