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PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS (Tables)
 3 Months Ended
Mar. 31, 2014
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)
 
2014
 
2013
 
2014
 
2013
Service cost – benefits earned during the period
 
$
1.3

 
$
1.3

 
$
0.2

 
$
0.3

Interest cost on projected benefit obligations
 
4.0

 
3.6

 
0.4

 
0.3

Amortization of transition cost
 
0.1

 
—

 
—

 
—

Expected return on plan assets
 
(4.0
)
 
(4.3
)
 
—

 
—

  Net periodic benefit cost
 
$
1.4

 
$
0.6

 
$
0.6

 
$
0.6

Net Actuarial (Gains)/Losses
 
—

 
(15.2
)
 
—

 
—

Total net periodic benefit cost
 
$
1.4

 
$
(14.6
)
 
$
0.6

 
$
0.6