Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Stock Awards) (Details)

v3.8.0.1
Stock-Based Compensation (Stock Awards) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Mar. 06, 2017
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock awards vested in period, aggregate market value   $ 17 $ 30 $ 16
Stock awards, aggregate grant date fair value   27 $ 28 $ 27
Deferred Compensation Liability, Current and Noncurrent   $ 11    
Phantom Share Units (PSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 3.3      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Maximum Award Settlement, Per Share $ 11.92      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Outstanding, Grant Date Fair Value   $ 3.54    
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation expense   $ 22    
Weighted average period over which unrecognized compensation is expected to be recognized (years)   2 years