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Derivative Financial Instruments (Details) - USD ($)
3 Months Ended 6 Months Ended
Jul. 29, 2018
Jul. 30, 2017
Jul. 29, 2018
Jul. 30, 2017
Jan. 28, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]          
Designated as cash flow hedges $ 396,000,000   $ 396,000,000   $ 104,000,000
Not designated for hedge accounting 92,000,000   92,000,000   $ 94,000,000
Derivative [Line Items]          
Gain (loss) associated with ineffectiveness $ 0 $ 0 $ 0 $ 0  
Foreign currency forward contracts          
Derivative [Line Items]          
Derivative, maturity period     18 months