Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements and Concentrations of Credit Risk (Company Non-Financial Assets Measured On A Recurring Basis) (Details)

v3.7.0.1
Fair Value Measurements and Concentrations of Credit Risk (Company Non-Financial Assets Measured On A Recurring Basis) (Details) - USD ($)
$ in Millions
Jan. 28, 2017
Jan. 30, 2016
Long-lived assets held and used $ 147 $ 53
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Long-lived assets held and used 0 0
Significant Observable Inputs (Level 2) [Member]    
Long-lived assets held and used 0 0
Significant Unobservable Inputs (Level 3) [Member]    
Long-lived assets held and used $ 147 $ 53