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Comprehensive Income (Tables)
 6 Months Ended
Aug. 04, 2018
Equity [Abstract]  
Components of accumulated other comprehensive income
net of tax, were as follows for the three and six months ended August 4, 2018, and July 29, 2017 ($ in millions):
 
Three Months Ended
 
Six Months Ended
 
August 4, 2018
 
July 29, 2017
 
August 4, 2018
 
July 29, 2017
Foreign currency translation adjustments
$
(14
)
 
$
55

 
$
(18
)
 
$
42