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Retirement Benefits (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
Retirement Benefits [Abstract]      
Expense related to the qualified plan $ 51 $ 49 $ 46
Maximum Period Vested Amount Will Be Paid Out For Terminated Employees 10 years    
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Balance at Beginning of Year 193 168  
Associate Contributions 12 12  
Company Contributions 15 15  
Interest 11 12  
Distributions (17) (14)  
Balance at End of Year 214 193 168
Expense related to the non-qualified plan $ 26 $ 27 $ 20