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Pension and Postretirement Health and Life Benefits
 3 Months Ended
Mar. 31, 2015
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
Pension and Postretirement Health and Life Benefits
PENSION AND POSTRETIREMENT HEALTH AND LIFE BENEFITS

The components of net benefit costs for pension and postretirement health and life benefit plans were as follows (in millions):
 
Defined Benefit Pension Plans
 
Postretirement Health
and Life Benefit Plans
 
Successor
 
 
Predecessor
 
Successor
 
 
Predecessor
 
Three Months Ended
March 31, 2015
 
 
Three Months Ended
March 31, 2014
 
Three Months Ended
March 31, 2015
 
 
Three Months Ended
March 31, 2014
Service costs
$
1.0

 
 
$
0.6

 
$
0.1

 
 
$
0.5

Interest costs
9.3

 
 
10.5

 
2.2

 
 
2.5

Expected return on plan assets (gains)
(12.2
)
 
 
(12.8
)
 
(0.2
)
 
 
(0.5
)
Amortization of actuarial (gains) losses, net
—

 
 
0.3

 
—

 
 
—

Amortization of prior service costs (credits), net
—

 
 
—

 
(0.1
)
 
 
(0.1
)
Net periodic benefit cost (credit)
$
(1.9
)
 
 
$
(1.4
)
 
$
2.0

 
 
$
2.4



Centrus expects to contribute $9.7 million to the non-qualified defined benefit pension plans in 2015. There were no contributions in the three months ended March 31, 2015. The Company does not expect there to be a required contribution for the qualified defined benefit pension plans in 2015 and therefore does not expect to contribute in 2015. There is no required contribution for the postretirement health and life benefit plans under Employee Retirement Income Security Act (“ERISA”) and the Company does not expect to contribute in 2015.