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Fair Value Measurements - Schedule of Significant Financial Instruments not Measured at Fair Value (Details) - USD ($)
$ in Millions
Jan. 30, 2016
Jan. 31, 2015
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt $ 11,859 $ 11,875
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt $ 13,385 $ 14,089