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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)
3 Months Ended
Mar. 31, 2013
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
Schedule of net periodic benefit cost
 
 
Three Months Ended March 31,
 
 
Pension Benefits
 
Other Benefits
(In millions)
 
2013
 
2012
 
2013
 
2012
Service cost – benefits earned during the period
 
$
1.3

 
$
0.9

 
$
0.3

 
$
0.2

Interest cost on projected benefit obligations
 
3.6

 
3.9

 
0.3

 
0.3

Expected return on plan assets
 
(4.1
)
 
(4.0
)
 

 

Amortization of net actuarial loss
 
1.6

 
1.3

 
0.4

 
0.5

  Net periodic benefit cost
 
$
2.4

 
$
2.1

 
$
1.0

 
$
1.0

Settlements
 
6.9

 

 

 

Total net periodic benefit cost
 
$
9.3

 
$
2.1

 
$
1.0

 
$
1.0