Real Estate and Other, Net Real Estate and Other, Net (Tables)
 9 Months Ended
Oct. 28, 2017
Real Estate and Other, Net [Abstract]  
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]
The composition of Real estate and other, net was as follows:
 
Three Months Ended
 
Nine Months Ended
($ in millions)
October 28,
2017
 
October 29,
2016
 
October 28,
2017
 
October 29,
2016
Net gain from sale of non-operating assets
$
—

 
$
—

 
$
—

 
$
(5
)
Investment income from Home Office Land Joint Venture
(3
)
 
—

 
(23
)
 
(29
)
Net gain from sale of operating assets
(1
)
 
—

 
(119
)
 
(10
)
Other
6

 
(1
)
 
7

 
(4
)
Total expense/(income)
$
2

 
$
(1
)
 
$
(135
)
 
$
(48
)