Derivative Financial Instruments - Outstanding Currency, Forward Exchange Contracts (Detail) - Foreign Currency Forward Contracts [Member] - USD ($) $ in Thousands	Oct. 31, 2018	Oct. 31, 2017
Sell [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	$ 378,370	$ 221,167
Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	482,812	333,742
Euro [Member] | Sell [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	323,571	144,611
Euro [Member] | Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	184,170	78,253
Pound sterling [Member] | Sell [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	23,879	45,252
Pound sterling [Member] | Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	60,007	54,204
Japanese Yen [Member] | Sell [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	25,408	24,904
Japanese Yen [Member] | Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	46,671	28,358
Australian Dollar [Member] | Sell [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	178	193
Australian Dollar [Member] | Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	7,912	8,185
Hong Kong Dollar [Member] | Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	112,414	100,131
Singapore Dollar [Member] | Sell [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	604	794
Singapore Dollar [Member] | Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	14,092	12,681
Others [Member] | Sell [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	4,730	5,413
Others [Member] | Buy [Member]
Derivative [Line Items]
Notional Amounts of foreign currency derivative contracts	$ 57,546	$ 51,930