Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements and Concentrations of Credit Risk (Narrative) (Details)

v3.7.0.1
Fair Value Measurements and Concentrations of Credit Risk (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]    
Carrying value of long-lived assets held and used $ 405 $ 201
Long-lived assets held and used 147 53
Impairments of properties held and used $ 258 $ 148