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Pension And Other Retiree Benefits (Tables)
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost for Pension and Post-Retirement Plans
The components of net periodic benefit (income) cost for pension and post-retirement plans for the three months ended March 31, 2020 and 2019 were as follows: 
 
Three Months Ended March 31,
 
Pension
 
Post-retirement
 
U.S.
 
International
 
 
 
 
(in millions)
2020
 
2019
 
2020
 
2019
 
2020
 
2019
Service cost
$
0.4

 
$
0.4

 
$
0.4

 
$
0.3

 
$
—

 
$
—

Interest cost
1.5

 
1.8

 
2.4

 
3.4

 
—

 
0.1

Expected return on plan assets
(2.9
)
 
(2.9
)
 
(4.7
)
 
(5.1
)
 
—

 
—

Amortization of net loss (gain)
0.8

 
0.5

 
1.2

 
0.8

 
(0.1
)
 
(0.1
)
Amortization of prior service cost
0.1

 
0.1

 
0.1

 
—

 
—

 
—

Net periodic benefit income(1)
$
(0.1
)
 
$
(0.1
)
 
$
(0.6
)
 
$
(0.6
)
 
$
(0.1
)
 
$
—



(1)
The components, other than service cost, are included in the line "Non-operating pension income" in the Consolidated Statements of Operations.