Derivative Financial Instruments (Tables)
 9 Months Ended
Oct. 28, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Liabilities at Fair Value [Table Text Block]
Information regarding the gross amounts of our derivative instruments in the unaudited Interim Consolidated Balance Sheets is as follows:
 
Asset Derivatives at Fair Value
 
Liability Derivatives at Fair Value
($ in millions)
Balance Sheet Location
 
October 28, 2017
 
October 29, 2016
 
January 28, 2017
 
Balance Sheet Location
 
October 28, 2017
 
October 29, 2016
 
January 28, 2017
Derivatives designated as hedging instruments:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate swaps
N/A
 
$
—

 
$
—

 
$
—

 
Other accounts payable and accrued expenses
 
$
2

 
$
2

 
$
2

Interest rate swaps
N/A
 
—

 
—

 
—

 
Other liabilities
 
5

 
29

 
10

Total derivatives designated as hedging instruments
 
 
$
—

 
$
—

 
$
—

 
 
 
$
7

 
$
31

 
$
12