Retirement Benefit Plans
 3 Months Ended
May 04, 2019
Retirement Benefit Plans [Abstract]  
Retirement Benefit Plans
Retirement Benefit Plans
The components of net periodic pension expense/(income) for our non-contributory qualified defined benefit pension plan and supplemental pension plans were as follows:
 
Three Months Ended
 
($ in millions)
May 4,
2019
 
May 5,
2018
 
Service cost
$
7

 
$
9

 
 
 
 
 
 
Other components of net periodic pension cost/(income):
 
 
 
 
Interest cost
33

 
35

 
Expected return on plan assets
(48
)
 
(56
)
 
Amortization of prior service cost/(credit)
2

 
2

 
 
(13
)
 
(19
)
 
Net periodic pension expense/(income)
$
(6
)
 
$
(10
)
 


Service cost is included in SG&A in the unaudited Interim Consolidated Statements of Operations.