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Benefit Plans (Tables)
3 Months Ended
May 04, 2013
Pension and Other Postretirement Benefit Expense [Abstract]  
Schedule of Net Periodic Benefit Costs
The actuarially determined components of the net periodic benefit cost are as follows:
 
 
13 Weeks Ended
 
May 4, 2013
 
April 28, 2012
 
(millions)
Pension Plan
 
 
 
Service cost
$
28

 
$
28

Interest cost
36

 
39

Expected return on assets
(60
)
 
(63
)
Recognition of net actuarial loss
35

 
35

Amortization of prior service credit

 

 
$
39

 
$
39

Supplementary Retirement Plan
 
 
 
Service cost
$
2

 
$
2

Interest cost
8

 
8

Recognition of net actuarial loss
4

 
4

Amortization of prior service credit

 

 
$
14

 
$
14

Postretirement Obligations
 
 
 
Service cost
$

 
$

Interest cost
3

 
3

Recognition of net actuarial gain
(1
)
 
(1
)
Amortization of prior service cost

 

 
$
2

 
$
2