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Equity Based Employee Benefit Plans Additional Disclosures (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 01, 2015
Aug. 02, 2014
Aug. 01, 2015
Aug. 02, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation $ 17 $ 16 $ 34 $ 37
Shares issued pursuant to the 2012 Employee Stock Purchase Plan     1,300,000 2,100,000
Unamortized Stock Compensation Expense Cost Not yet Recognized $ 104   $ 104  
Performance Shares [Abstract]        
Vesting of Performance Shares, Vesting Tranche Based on Satisfaction of Sales Growth Metrics     50.00%  
Vesting of Performance Shares, Vesting Tranche Based on Achievement of Certain Return on Net Assets Percentage Targets     50.00%  
Change in Performance Share Awards Earned Due to Performance     25.00%  
Stock Options        
Stock Issued During Period, Shares, New Issues     0  
Shares Issued Upon the Exercise of Stock Options     400,000  
March 2015 Grant [Member]        
Performance Shares [Abstract]        
Target Number of Shares in Tranche Each Year     500,000  
Aggregate Grant Date Fair Value of Shares in Tranche     $ 8  
March 2014 Grant [Member]        
Performance Shares [Abstract]        
Target Number of Shares in Tranche Each Year     600,000  
Aggregate Grant Date Fair Value of Shares in Tranche     $ 9  
April 2013 Grant [Member]        
Performance Shares [Abstract]        
Target Number of Shares in Tranche Each Year     500,000  
Aggregate Grant Date Fair Value of Shares in Tranche     $ 8  
Minimum [Member]        
Performance Shares [Abstract]        
Performance Shares Payout, as a Percentage of Target     25.00%  
Maximum [Member]        
Performance Shares [Abstract]        
Performance Shares Payout, as a Percentage of Target     200.00%