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Pensions (Tables)
3 Months Ended
Jun. 30, 2021
Pensions [Abstract]  
Pension Cost
Pension cost included the following components:

 
Three months ended
June 30,
 
   
2021
   
2020
 
Service cost
 
$
0.1
   
$
0.1
 
Interest cost
   
1.8
     
2.0
 
Expected return on plan assets
   
(3.2
)
   
(2.9
)
Amortization of unrecognized net loss
   
1.7
     
1.7
 
Net periodic benefit cost
 
$
0.4
   
$
0.9