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Shareholders' Equity Repurchase of Common Stock (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
2 Months Ended 12 Months Ended
Mar. 29, 2018
Feb. 02, 2019
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Feb. 27, 2017
Jun. 30, 2011
Stock Repurchases [Line Items]              
Current Two Year Projection of Share Repurchases, Value     $ 3,500        
Prior Two Year Projection of Share Repurchases, Value     3,000        
Accelerated Share Repurchase Price (low end of the range)     150        
Accelerated Share Repurchase Price (high end of the range)     $ 175        
Prepaid repurchase of common stock         $ 55    
Accelerated Share Repurchase Settlement Amount       $ 165      
Stock Repurchased and Retired at ASR Settlement, Shares     1.6        
Accelerated Share Repurchases, Description of Adjustment to Initial Price Paid     $ 10        
Open market [Domain]              
Stock Repurchases [Line Items]              
Average price per share     $ 57.16 $ 36.11 $ 31.03    
Number of share repurchased and retired     35.1 19.5 28.4    
Unsettled shares, cost     $ 13 $ 8      
Unsettled shares, shares     0.2 0.1      
Total cost of shares repurchased     $ 2,009 $ 706 $ 880    
January 2016 ASR [Domain]              
Stock Repurchases [Line Items]              
Average price per share     $ 0.00 $ 28.55 $ 27.28    
Number of share repurchased and retired     0.0 1.6 4.4    
Total cost of shares repurchased     $ 0 $ 45 $ 120    
Total share repurchases [Domain]              
Stock Repurchases [Line Items]              
Average price per share     $ 57.16 $ 35.54 $ 30.53    
Number of share repurchased and retired     35.1 21.1 32.8    
Total cost of shares repurchased     $ 2,009 $ 751 $ 1,000    
February 2017 share repurchase program [Member]              
Stock Repurchases [Line Items]              
Stock Repurchase Program, Authorized Amount           $ 5,000  
Stock Repurchase Program, Remaining Authorized Repurchase Amount     $ 3,000        
June 2011 share repurchase program [Member}              
Stock Repurchases [Line Items]              
Stock Repurchase Program, Authorized Amount             $ 5,000
Total share repurchases [Domain]              
Stock Repurchases [Line Items]              
Number of share repurchased and retired 3.5            
Total cost of shares repurchased $ 249            
Scenario, Forecast [Member]              
Stock Repurchases [Line Items]              
Future Intended Share Repurchase Amount, Value   $ 1,500