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Stock-Based Compensation (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Jan. 30, 2015
Jan. 24, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense before tax $ 3,266us-gaap_AllocatedShareBasedCompensationExpense $ 5,004us-gaap_AllocatedShareBasedCompensationExpense
Stock Compensation Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Restricted Stock Or Stock Awards Share Multiple Impact On The Reserve Pool 3.51val_RestrictedStockOrStockAwardsShareMultipleImpactOnReservePool
/ us-gaap_AwardTypeAxis
= us-gaap_StockCompensationPlanMember		  
Stock Compensation Plan [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage amount paid for performance-based awards 50.00%val_Percentageamountpaidforperformancebasedawards
/ us-gaap_AwardTypeAxis
= us-gaap_StockCompensationPlanMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Stock Compensation Plan [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage amount paid for performance-based awards 250.00%val_Percentageamountpaidforperformancebasedawards
/ us-gaap_AwardTypeAxis
= us-gaap_StockCompensationPlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember