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Benefit Plans (Tables)
 9 Months Ended
Nov. 03, 2018
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]  
Schedule of Costs of Retirement Plans
The defined contribution plan expense and actuarially determined components of the net periodic benefit cost (income) associated with the defined benefit plans are as follows:
 
13 Weeks Ended
 
39 Weeks Ended
 
November 3, 2018
 
October 28, 2017
 
November 3, 2018
 
October 28, 2017
 
(millions)
 
(millions)
401(k) Qualified Defined Contribution Plan
$
24

 
$
20

 
$
71

 
$
65

 
 
 
 
 
 
 
 
Non-Qualified Defined Contribution Plan
$
—

 
$
—

 
$
1

 
$
—

 
 
 
 
 
 
 
 
Pension Plan
 
 
 
 
 
 
 
Service cost
$
1

 
$
1

 
$
4

 
$
4

Interest cost
28

 
25

 
81

 
79

Expected return on assets
(51
)
 
(55
)
 
(157
)
 
(168
)
Recognition of net actuarial loss
7

 
8

 
23

 
24

Amortization of prior service credit
—

 
—

 
—

 
—

 
$
(15
)
 
$
(21
)
 
$
(49
)
 
$
(61
)
Supplementary Retirement Plan
 
 
 
 
 
 
 
Service cost
$
—

 
$
—

 
$
—

 
$
—

Interest cost
6

 
6

 
17

 
17

Recognition of net actuarial loss
2

 
2

 
6

 
6

Amortization of prior service cost
—

 
—

 
—

 
—

 
$
8

 
$
8

 
$
23

 
$
23

 
 
 
 
 
 
 
 
Total Retirement Expense
$
17

 
$
7

 
$
46

 
$
27

 
 
 
 
 
 
 
 
Postretirement Obligations
 
 
 
 
 
 
 
Service cost
$
—

 
$
—

 
$
—

 
$
—

Interest cost
1

 
1

 
3

 
4

Recognition of net actuarial gain
(2
)
 
(2
)
 
(4
)
 
(4
)
Amortization of prior service credit
—

 
—

 
—

 
—

 
$
(1
)
 
$
(1
)
 
$
(1
)
 
$
—