Equity and Comprehensive Income (Loss) - Summary of Changes in Equity (Detail) - USD ($) shares in Thousands | 3 Months Ended | 6 Months Ended | 18 Months Ended |
Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2016 |
Beginning balance, value | | | $ 1,059,900,000 | $ 1,223,200,000 | $ 1,223,200,000 |
Net income | $ 32,500,000 | $ 20,500,000 | 22,600,000 | 48,700,000 | |
Other comprehensive income (loss): | | | | | |
Foreign currency translation | 46,300,000 | (40,500,000) | 18,000,000 | (115,100,000) | |
Net reclassification of cash flow hedges to earnings, net of immaterial income tax benefit | | | | 100,000 | |
Minimum pension liability adjustment, net of income tax expense (benefit) | (1,300,000) | 900,000 | 600,000 | 6,400,000 | |
Comprehensive income (loss) | 77,500,000 | (19,100,000) | 41,200,000 | (59,900,000) | |
Acquisition of noncontrolling interest and other | | | | (13,800,000) | |
Reclassification of redeemable noncontrolling interest | | | (21,600,000) | | |
Net income allocated to redeemable noncontrolling interests | | | (2,400,000) | | |
Noncontrolling interests, loan conversion and other | | | (300,000) | | |
Dividends paid to Greif, Inc. shareholders | (24,800,000) | (24,700,000) | (49,300,000) | (49,200,000) | |
Dividends to noncontrolling interests | | | (2,200,000) | | |
Stock options exercised | | | | 200,000 | |
Treasury shares acquired, value | | | (5,200,000) | | 0 |
Restricted stock executives and directors, value | | | 1,100,000 | 1,100,000 | |
Long-term incentive shares issued | | | 1,100,000 | 2,100,000 | |
Ending balance, value | 1,000,500,000 | 1,103,700,000 | 1,000,500,000 | 1,103,700,000 | 1,000,500,000 |
Out of Period [Member] | | | | | |
Other comprehensive income (loss): | | | | | |
Mark to redemption value of redeemable noncontrolling interest | | | (19,800,000) | | |
Current Period [Member] | | | | | |
Other comprehensive income (loss): | | | | | |
Mark to redemption value of redeemable noncontrolling interest | | | 2,000,000 | | |
Capital Stock [Member] | | | | | |
Beginning balance, value | | | $ 139,100,000 | $ 135,500,000 | $ 135,500,000 |
Beginning balance, shares | | | 47,814 | 47,724 | 47,724 |
Other comprehensive income (loss): | | | | | |
Stock options exercised | | | | $ 200,000 | |
Stock options exercised, Shares | | | | 10 | |
Treasury shares acquired, share | | | (110) | | |
Restricted stock executives and directors, value | | | $ 1,000,000 | $ 1,100,000 | |
Restricted stock executives and directors, share | | | 42 | 26 | |
Long-term incentive shares issued | | | $ 1,000,000 | $ 2,000,000 | |
Long-term incentive shares issued, Shares | | | 41 | 49 | |
Ending balance, value | $ 141,100,000 | $ 138,800,000 | $ 141,100,000 | $ 138,800,000 | $ 141,100,000 |
Ending balance, shares | 47,787 | 47,809 | 47,787 | 47,809 | 47,787 |
Treasury Stock [Member] | | | | | |
Beginning balance, value | | | $ (130,600,000) | $ (130,700,000) | $ (130,700,000) |
Beginning balance, shares | | | 29,028 | 29,118 | 29,118 |
Other comprehensive income (loss): | | | | | |
Treasury shares acquired, value | | | $ (5,200,000) | | |
Stock options exercised, Shares | | | | (10) | |
Treasury shares acquired, share | | | 110 | | |
Restricted stock executives and directors, value | | | $ 100,000 | $ (26,000,000) | |
Restricted stock executives and directors, share | | | (42) | | |
Long-term incentive shares issued | | | $ 100,000 | $ 100,000 | |
Long-term incentive shares issued, Shares | | | (41) | (49) | |
Ending balance, value | $ (135,600,000) | $ (130,600,000) | $ (135,600,000) | $ (130,600,000) | $ (135,600,000) |
Ending balance, shares | 29,055 | 29,033 | 29,055 | 29,033 | 29,055 |
Retained Earnings [Member] | | | | | |
Beginning balance, value | | | $ 1,384,500,000 | $ 1,411,700,000 | $ 1,411,700,000 |
Net income | | | 20,300,000 | 50,900,000 | |
Other comprehensive income (loss): | | | | | |
Acquisition of noncontrolling interest and other | | | | (400,000) | |
Reclassification of redeemable noncontrolling interest | | | 1,200,000 | | |
Dividends paid to Greif, Inc. shareholders | | | (49,300,000) | (49,200,000) | |
Ending balance, value | $ 1,334,900,000 | $ 1,413,000,000 | 1,334,900,000 | 1,413,000,000 | 1,334,900,000 |
Retained Earnings [Member] | Out of Period [Member] | | | | | |
Other comprehensive income (loss): | | | | | |
Mark to redemption value of redeemable noncontrolling interest | | | (19,800,000) | | |
Retained Earnings [Member] | Current Period [Member] | | | | | |
Other comprehensive income (loss): | | | | | |
Mark to redemption value of redeemable noncontrolling interest | | | 2,000,000 | | |
Accumulated Other Comprehensive Income (Loss) [Member] | | | | | |
Beginning balance, value | | | (377,400,000) | (274,400,000) | (274,400,000) |
Other comprehensive income (loss): | | | | | |
Foreign currency translation | | | 18,600,000 | (91,200,000) | |
Net reclassification of cash flow hedges to earnings, net of immaterial income tax benefit | | | | 100,000 | |
Minimum pension liability adjustment, net of income tax expense (benefit) | | | 600,000 | 6,400,000 | |
Ending balance, value | (358,200,000) | (359,100,000) | (358,200,000) | (359,100,000) | (358,200,000) |
Noncontrolling Interests [Member] | | | | | |
Beginning balance, value | | | 44,300,000 | 81,100,000 | 81,100,000 |
Net income | | | 2,300,000 | (2,200,000) | |
Other comprehensive income (loss): | | | | | |
Foreign currency translation | | | (600,000) | (23,900,000) | |
Acquisition of noncontrolling interest and other | | | | (13,400,000) | |
Reclassification of redeemable noncontrolling interest | | | (22,800,000) | | |
Net income allocated to redeemable noncontrolling interests | | | (2,400,000) | | |
Noncontrolling interests, loan conversion and other | | | (300,000) | | |
Dividends to noncontrolling interests | | | (2,200,000) | | |
Ending balance, value | 18,300,000 | 41,600,000 | 18,300,000 | 41,600,000 | 18,300,000 |
Parent Company [Member] | | | | | |
Beginning balance, value | | | 1,015,600,000 | 1,142,100,000 | 1,142,100,000 |
Net income | | | 20,300,000 | 50,900,000 | |
Other comprehensive income (loss): | | | | | |
Foreign currency translation | | | 18,600,000 | (91,200,000) | |
Net reclassification of cash flow hedges to earnings, net of immaterial income tax benefit | | | | 100,000 | |
Minimum pension liability adjustment, net of income tax expense (benefit) | | | 600,000 | 6,400,000 | |
Comprehensive income (loss) | | | 39,500,000 | (33,800,000) | |
Acquisition of noncontrolling interest and other | | | | (400,000) | |
Reclassification of redeemable noncontrolling interest | | | 1,200,000 | | |
Dividends paid to Greif, Inc. shareholders | | | (49,300,000) | (49,200,000) | |
Stock options exercised | | | | 200,000 | |
Treasury shares acquired, value | | | (5,200,000) | | |
Restricted stock executives and directors, value | | | 1,100,000 | 1,100,000 | |
Long-term incentive shares issued | | | 1,100,000 | 2,100,000 | |
Ending balance, value | $ 982,200,000 | $ 1,062,100,000 | 982,200,000 | $ 1,062,100,000 | $ 982,200,000 |
Parent Company [Member] | Out of Period [Member] | | | | | |
Other comprehensive income (loss): | | | | | |
Mark to redemption value of redeemable noncontrolling interest | | | (19,800,000) | | |
Parent Company [Member] | Current Period [Member] | | | | | |
Other comprehensive income (loss): | | | | | |
Mark to redemption value of redeemable noncontrolling interest | | | $ 2,000,000 | | |