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Credit Facility - Additional Information (Detail) - USD ($)
3 Months Ended
Nov. 28, 2016
Jan. 31, 2017
Jan. 31, 2016
Oct. 31, 2016
May 19, 2015
Debt Instrument [Line Items]          
Long-term debt   $ 142,500,000   $ 0  
Proceeds from Lines of Credit   150,000,000 $ 30,000,000    
Unsecured Debt | The Credit Agreement | Revolving Credit Facility          
Debt Instrument [Line Items]          
Credit facility maximum borrowing capacity $ 650,000,000       $ 500,000,000
Additional borrowings from credit facility 150,000,000        
Line of Credit, Current   $ 170,000,000      
Unsecured Debt | The Credit Agreement | Revolving Credit Facility | Minimum          
Debt Instrument [Line Items]          
Commitment fees percentage   0.125%      
Unsecured Debt | The Credit Agreement | Revolving Credit Facility | Maximum          
Debt Instrument [Line Items]          
Commitment fees percentage   0.20%      
Unsecured Debt | The Credit Agreement | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)          
Debt Instrument [Line Items]          
Borrowings, interest rate   1.00%      
Unsecured Debt | The Credit Agreement | Term Loan          
Debt Instrument [Line Items]          
Senior unsecured term loan facility, face amount $ 150,000,000        
Total Outstanding senior unsecured term loan facility   $ 149,500,000      
Long-term debt   142,500,000      
Proceeds from Lines of Credit   $ 150,000,000      
Unsecured Debt | The Credit Agreement | Term Loan | London Interbank Offered Rate (LIBOR)          
Debt Instrument [Line Items]          
Borrowings, interest rate   1.125%      
Unsecured Debt | 2015 Agreement | Revolving Credit Facility          
Debt Instrument [Line Items]          
Line of Credit, Current       205,000,000  
Unsecured Debt | 2015 Agreement | Term Loan          
Debt Instrument [Line Items]          
Total Outstanding senior unsecured term loan facility       $ 0