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Fair Value Measures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Apr. 30, 2019
Oct. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets $ 459,954 $ 382,363
Total liabilities 254,875 235,187
Foreign currency derivative contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Prepaid and other current assets 8,686 4,902
Accounts payable and accrued liabilities 10,045 23,022
Deferred compensation plan liabilities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term liabilities 244,830 212,165
Deferred compensation plan assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term assets 244,830 212,165
Money market funds | Cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 206,438 165,296
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 451,268 377,461
Total liabilities 244,830 212,165
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign currency derivative contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Prepaid and other current assets 0 0
Accounts payable and accrued liabilities 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Deferred compensation plan liabilities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term liabilities 244,830 212,165
Quoted Prices in Active Markets for Identical Assets (Level 1) | Deferred compensation plan assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term assets 244,830 212,165
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds | Cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 206,438 165,296
Significant Other Observable Inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 8,686 4,902
Total liabilities 10,045 23,022
Significant Other Observable Inputs (Level 2) | Foreign currency derivative contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Prepaid and other current assets 8,686 4,902
Accounts payable and accrued liabilities 10,045 23,022
Significant Other Observable Inputs (Level 2) | Deferred compensation plan liabilities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term liabilities 0 0
Significant Other Observable Inputs (Level 2) | Deferred compensation plan assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term assets 0 0
Significant Other Observable Inputs (Level 2) | Money market funds | Cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 0 0
Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 0 0
Total liabilities 0 0
Significant Unobservable Inputs (Level 3) | Foreign currency derivative contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Prepaid and other current assets 0 0
Accounts payable and accrued liabilities 0 0
Significant Unobservable Inputs (Level 3) | Deferred compensation plan liabilities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term liabilities 0 0
Significant Unobservable Inputs (Level 3) | Deferred compensation plan assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other long-term assets 0 0
Significant Unobservable Inputs (Level 3) | Money market funds | Cash equivalents    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents $ 0 $ 0