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PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS
 9 Months Ended
Sep. 30, 2015
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS
    PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS
 
The net periodic benefit cost of the Company’s defined benefit pension and post-employment benefit plans includes: 
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
Pension Benefits
 
Other Benefits
 
Pension Benefits
 
Other Benefits
(In millions)
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Service cost – benefits earned during the period
 
$
0.6

 
$
0.8

 
$
0.3

 
$
0.2

 
$
2.1

 
$
3.6

 
$
0.9

 
$
0.6

Interest cost on projected benefit obligations
 
2.6

 
3.6

 
0.5

 
0.4

 
10.0

 
11.2

 
1.5

 
1.2

Amortization of transition cost
 
—

 
—

 
—

 
—

 
—

 
0.2

 
—

 
—

Expected return on plan assets
 
(3.4
)
 
(3.8
)
 
—

 
—

 
(10.3
)
 
(11.6
)
 
—

 
—

  Net periodic benefit cost
 
$
(0.2
)
 
$
0.6

 
$
0.8

 
$
0.6

 
$
1.8

 
$
3.4

 
$
2.4

 
$
1.8

Curtailments
 
—

 
(5.4
)
 
—

 
—

 
—

 
(5.4
)
 
—

 
—

Net Actuarial (Gains)/Losses
 
11.4

 
9.3

 
—

 
—

 
9.9

 
16.4

 
—

 
—

Total net periodic expense/(benefit)
 
$
11.2

 
$
4.5

 
$
0.8

 
$
0.6

 
$
11.7

 
$
14.4

 
$
2.4

 
$
1.8


 
The Company remeasures its U.S. pension plan when year-to-date aggregate lump sum settlements exceed anticipated interest costs for the year, and in each subsequent quarter of that fiscal year.  Because aggregate lump sum settlements exceeded anticipated interest costs for 2014 and 2015 during the second quarter of each respective year, the Company remeasured its U.S. pension plan in both the second and third quarter of 2014 and 2015. During the three and nine months ended September 30, 2015, the Company recognized a net actuarial loss of $11.4 million and $9.9 million, respectively.
During the three and nine months ended September 30, 2014, the Company recognized a net actuarial loss of $9.3 million and $16.4 million, respectively.

During the three months ended September 30, 2015, the Company changed the method used to estimate the interest cost components of net periodic benefit cost for defined benefit pension and other post-retirement benefit plans. Historically, the interest cost components were estimated using a single weighted-average discount rate derived from the yield curve used to measure the projected benefit obligation at the beginning of the period. The Company has elected to use a full yield curve approach in the estimation of these components of benefit cost by applying the specific spot rates along the yield curve used in the determination of the projected benefit obligation to the relevant projected cash flows. The Company made this change to improve the correlation between projected benefit cash flows and the corresponding yield curve spot rates and to provide a more precise measurement of interest costs. This change does not affect the measurement of total benefit obligations as the change in interest cost is completely offset in the actuarial loss reported in the period. The Company has accounted for this change as a change in estimate and, accordingly, has accounted for it prospectively starting in the the third quarter of 2015. The reduction in interest cost for the three and nine months ended September 30, 2015 associated with this change in estimate is $1 million.

During the three and nine months ended September 30, 2014, the Company recognized a gain of $5.4 million within Other Expenses/(Income) - net related to the curtailment of a defined benefit pension plan outside the U.S.

For the nine months ended September 30, 2015 and 2014, the Company contributed $86.6 million and $4.2 million, respectively, primarily to U.S. pension plans in 2015 and plans outside the U.S. in 2014.