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POST RETIREMENT PLANS
 9 Months Ended
Sep. 30, 2017
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]  
POST RETIREMENT PLANS
POST RETIREMENT PLANS
The Company’s net periodic benefit cost was comprised of the following components (in millions):
 
 
Three Months Ended
 
Nine Months Ended
 
September 30,
2017
 
October 1,
2016
 
September 30,
2017
 
October 1,
2016
Service Cost
$
1.8

 
$
2.0

 
$
5.4

 
$
6.1

Interest Cost
2.5

 
2.6

 
7.3

 
7.7

Expected Return on Plan Assets
(2.8
)
 
(3.0
)
 
(8.4
)
 
(8.9
)
Amortization of Prior Service Cost and Net Actuarial Loss
0.6

 
0.8

 
1.8

 
2.7

Net Periodic Benefit Cost
$
2.1

 
$
2.4

 
$
6.1

 
$
7.6



The estimated net actuarial loss and prior service cost for post retirement plans that will be amortized from AOCI into net periodic benefit cost during the 2017 fiscal year is $2.2 million and $0.2 million, respectively.
For the three months ended September 30, 2017 and October 1, 2016, the Company contributed $6.0 million and $6.8 million, respectively, to post retirement plans. For the nine months ended September 30, 2017 and October 1, 2016, the Company contributed $8.2 million and $9.0 million, respectively, to post retirement plans. The Company expects to make total contributions of $9.4 million in 2017. The Company contributed a total of $10.4 million in fiscal 2016. The assumptions used in the valuation of the Company’s post retirement plans and in the target investment allocation have remained the same as those disclosed in the Company’s 2016 Annual Report on Form 10-K filed on March 1, 2017.