Long-Term Debt (Annual Principal Payments) (Details) - USD ($)
$ in Millions
Jan. 28, 2017
Jan. 30, 2016
Debt Disclosure [Abstract]    
2017 $ 263  
2018 307  
2019 442  
2020 442  
2021 42  
Thereafter 3,169  
Total $ 4,665 $ 4,830