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Summary Of Significant Accounting Policies (Schedule Of Allowance For Sales Returns) (Details) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Allowance for Sales Returns [Roll Forward]      
Allowance For Sales Return, Beginning Balance $ 7,431rost_AllowanceForSalesReturn $ 7,165rost_AllowanceForSalesReturn $ 6,426rost_AllowanceForSalesReturn
Allowance For Sales Return, Additions 717,040rost_AllowanceForSalesReturnAdditions 699,835rost_AllowanceForSalesReturnAdditions 680,058rost_AllowanceForSalesReturnAdditions
Allowance For Sales Return, Returns (715,877)rost_AllowanceForSalesReturnReturns (699,569)rost_AllowanceForSalesReturnReturns (679,319)rost_AllowanceForSalesReturnReturns
Allowance For Sales Return, Ending Balance $ 8,594rost_AllowanceForSalesReturn $ 7,431rost_AllowanceForSalesReturn $ 7,165rost_AllowanceForSalesReturn