Stockholders' Equity (Tables)
 12 Months Ended
Feb. 01, 2020
Stockholders' Equity Note [Abstract]  
Schedule of Accumulated Other Comprehensive Income/(Loss)
($ in millions)
 
Net Actuarial Gain/(Loss)
 
Prior Service Credit/(Cost)
 
Foreign Currency Translation
 
Gain/(Loss) on Cash Flow Hedges
 
Accumulated Other Comprehensive Income/(Loss)
February 3, 2018
 
$
(330
)
 
$
(26
)
 
$
—

 
$
(4
)
 
$
(360
)
Current period change
 
40

 
4

 
(1
)
 
(11
)
 
32

February 2, 2019
 
$
(290
)
 
$
(22
)
 
$
(1
)
 
$
(15
)
 
$
(328
)
ASU 2018-02 (Stranded Taxes) adoption (See Note 3)
 
46

 
3

 
—

 
4

 
53

Current period change
 
(66
)
 
7

 
—

 
(53
)
 
(112
)
February 1, 2020
 
$
(310
)
 
$
(12
)
 
$
(1
)
 
$
(64
)
 
$
(387
)