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PENSION AND POST-RETIREMENT PLANS (Tables)
3 Months Ended
Mar. 31, 2021
PENSION AND POST-RETIREMENT PLANS  
Components of net periodic benefit cost (benefit)

Pension Benefits

Post-retirement Benefits

Three Months Ended March 31, 

Three Months Ended March 31, 

(In millions)

    

2021

    

2020

    

2021

    

2020

Components of net periodic benefit cost (benefit):

Service cost

$

1.2

$

1.2

$

0.2

$

0.1

Interest cost

 

1.5

 

1.9

 

0.2

 

0.2

Expected return on plan assets

 

(3.6)

 

(3.2)

 

 

Amortization of net loss

 

1.3

 

1.5

 

0.3

 

0.2

Amortization of prior service credit

 

(0.6)

 

(0.6)

 

(0.9)

 

(0.9)

Net periodic benefit cost (benefit)

$

(0.2)

$

0.8

$

(0.2)

$

(0.4)