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RETIREMENT AND BENEFIT PLANS (Tables)
 3 Months Ended
May 06, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Net Benefit Costs [Table Text Block]
 
Pension Plans
 
SERP Plans
 
Thirteen Weeks Ended
 
Thirteen Weeks Ended
(In millions)
5/6/18
 
4/30/17
 
5/6/18
 
4/30/17
 
 
 
 
 
 
 
 
Service cost, including plan expenses    
$
8.3

 
$
6.9

 
$
1.3

 
$
1.2

Interest cost    
6.5

 
6.4

 
1.0

 
1.0

Expected return on plan assets    
(10.0
)
 
(9.7
)
 
—

 
—

Loss on settlement
—

 
9.4

 
—

 
—

Total    
$
4.8

 
$
13.0

 
$
2.3

 
$
2.2



Net benefit cost related to the Postretirement Plans was immaterial for the thirteen weeks ended May 6, 2018 and April 30, 2017.