Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Narrative) (Details)

v3.7.0.1
Shareholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Feb. 26, 2016
Feb. 01, 2014
Class of Stock [Line Items]          
Preferred stock, shares authorized 125,000,000        
Preferred stock, par value $ 0.01        
Preferred stock, shares issued 0        
Common stock, shares authorized 1,000,000,000        
Common stock, par value $ 0.01        
Common stock, shares issued 333,605,800 341,605,800 379,605,800   410,605,800
Common stock, shares outstanding 304,062,800 310,256,100 340,573,700   364,935,000
Retirement of common stock 8,000,000 38,000,000 31,000,000    
Stock Repurchase Program, Additional Authorized Amount       $ 1,500  
Stock repurchase program authorized amount $ 18,000        
Stock repurchased during period, shares 7,900,000 34,800,000 31,900,000    
Stock repurchased during period, value $ 316 $ 2,000 $ 1,900    
Stock repurchase program remaining authorized repurchase amount $ 1,716