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Pension (Tables)
9 Months Ended
Oct. 31, 2020
Pension [Abstract]  
Net Benefit Expense (Income)

Thirteen weeks ended

Thirty-nine weeks ended

October 31,

November 2,

October 31,

November 2,

($ in millions)

2020

2019

2020

2019

Service cost

$

3

$

5

$

10

$

15

Interest cost

5

 

7

16

20

Expected return on plan assets

(9)

 

(9)

(28)

(27)

Amortization of net loss

3

 

3

9

9

Net benefit expense

$

2

$

6

$

7

$

17