Retirement, Pension and Other Postretirement Plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Oct. 31, 2016	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Expenses on retirement plan			$ 17,194	$ 15,747	$ 14,423
Defined contribution plan vesting period			3 years
Settlement loss		$ (1,572)
Expected reductions in service costs associated with change in estimate	$ 1,000
Expected reductions in interest costs associated with change in estimate	$ 3,200
Retiree eligible age			65 years
Change in postretirement benefit estimates on service cost			$ 100
Change in postretirement benefit estimates on interest cost			$ 500
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of target rate in return seeking assets			40.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of target rate in return seeking assets			60.00%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Spot rates used to determine postretirement benefit service and interest costs			3.20%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Spot rates used to determine postretirement benefit service and interest costs			3.30%
Due to Lump Sum Retirement Payments [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement loss			$ (160)	(593)
Due to Plan Amendment [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain			$ 1,526
Due to Plan Termination [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement loss				(1,242)
Pension Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Method used to amortize net gains and losses, description			Net actuarial gains or losses are amortized to expense on a plan-by-plan basis when they exceed the accounting corridor, which is set at 10% of the greater of the plan assets or benefit obligations.
Accounting corridor, set percentage of greater of plan assets or benefit obligations			10.00%
Employer contribution in next fiscal year			$ 18,000
Pension Plan, United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement loss				(516)	$ (632)
Curtailment gain				(68)
Percentage of World wide pension assets			90.00%
Investments in common shares	0		0
Pension Plan, United States [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Spot rates used to determine net periodic benefit service and interest costs	2.40%
Pension Plan, United States [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Spot rates used to determine net periodic benefit service and interest costs	3.30%
Pension Plan, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Settlement loss			$ (160)	$ (1,319)
Curtailment gain			$ 1,526
Percentage of World wide pension assets			10.00%
Pension Plan, International [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Spot rates used to determine net periodic benefit service and interest costs	0.90%
Pension Plan, International [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Spot rates used to determine net periodic benefit service and interest costs	2.60%
Postretirement Benefit Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Method used to amortize net gains and losses, description			Net actuarial gains or losses are amortized to expense on a plan-by-plan basis when they exceed the accounting corridor, which is set at 10% of the greater of the plan assets or benefit obligations.
Accounting corridor, set percentage of greater of plan assets or benefit obligations			10.00%
Employer contribution in next fiscal year			$ 2,100