Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Income Tax [Line Items]
Earnings before income taxes of domestic operations			$ 181,840	$ 156,723	$ 140,044
Discrete tax expense related to nondeductible acquisition costs			1,070
Additional tax benefit relating to retroactive reinstatement of research credit				2,200
Additional tax benefit related to dividends paid from foreign earnings tax credit		$ 6,184		6,154
Favorable adjustment to unrecognized tax benefits	$ 1,192			2,682
Additional tax benefit relating to retroactive reinstatement of research and development credit		$ 2,025			2,486
Earnings before income taxes of international operations			238,451	211,771	160,818
Undistributed earnings aggregated			1,026,793	757,501
Total unrecognized tax benefits			3,781	3,336	$ 6,258	$ 5,812
Total unrecognized tax benefits impact the effective tax rate			3,273	2,775
Accrued interest expense related to unrecognized tax benefits			623	541
Tax credit carryforwards			5,493
Tax credit carryforwards which will expire in 2022			27
Indefinite tax credit carryforward amount			5,466
Operating loss carryforwards			120,950
Capital loss carryforward			20,149
Indefinite carryforward period			12,622
Net change in the valuation allowance			6,587	$ 1,537
Valuation allowance relates to tax credits and loss carryforwards			14,891
Federal [Member]
Income Tax [Line Items]
Operating loss carryforwards			21,929
State [Member]
Income Tax [Line Items]
Operating loss carryforwards			78,320
Foreign [Member]
Income Tax [Line Items]
Operating loss carryforwards			$ 13,174