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Pensions and Other Postretirement Benefits
 9 Months Ended
Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Pensions and Other Postretirement Benefits
Pensions and Other Postretirement Benefits
Net periodic pension and other post-retirement benefit costs are included in "Cost of sales, exclusive of depreciation and amortization," "Selling, general and administrative" and "Research and development" in the accompanying condensed consolidated statement of income.
The net periodic pension and other post-retirement benefit costs for the three and nine months ended September 30, 2015 and 2014 were as follows:
 
Pensions
 
Three Months Ended
September 30
 
Nine Months Ended
September 30
($ in millions)
2015
 
2014
 
2015
 
2014
Service cost
$
14

 
$
11

 
$
44

 
$
38

Interest cost
49

 
54

 
152

 
172

Expected return on plan assets
(76
)
 
(76
)
 
(215
)
 
(224
)
Amortization of actuarial losses
34

 
18

 
89

 
58

Amortization of prior service credit
(1
)
 
(1
)
 
(2
)
 
(2
)
Settlement losses
7

 
2

 
7

 
7

Curtailments and special termination benefits
1

 
—

 
2

 
—

Net periodic pension benefit cost
$
28

 
$
8

 
$
77

 
$
49


 
Other Postretirement Benefits
 
Three Months Ended
September 30
 
Nine Months Ended
September 30
($ in millions)
2015
 
2014
 
2015
 
2014
Service cost
$
4

 
$
3

 
$
14

 
$
12

Interest cost
11

 
10

 
35

 
35

Amortization of actuarial losses
7

 
1

 
23

 
8

Amortization of prior service credit
(2
)
 
(2
)
 
(7
)
 
(7
)
Net periodic other postretirement benefit cost
$
20

 
$
12

 
$
65

 
$
48


PPG is not required to make any mandatory contributions to its U.S. defined benefit pension plans in 2015. PPG made pretax, voluntary contributions in the nine months ended September 30, 2015 to its U.S. and non-U.S. pension plans totaling $250 million and $21 million, respectively. PPG made mandatory contributions to its non-U.S. pension plans totaling $15 million for the nine months-ended September 30, 2015 and expects to make additional mandatory contributions to these plans in the range of $3 million to $8 million in the fourth quarter of 2015. PPG expects its net periodic pension and other post-retirement benefit cost, excluding settlement losses, for 2015 will be approximately $170 million, with pension and other post-retirement benefit cost each representing approximately $85 million.
Retained Liabilities and Legacy Settlement Charges
PPG has retained certain liabilities for pension and post-retirement benefits earned for service up to the date of sale of its former automotive glass and service business for employees who were active as of the divestiture date and for individuals who were retirees of the business as of the divestiture date. There have been multiple PPG facilities closures in Canada related to the former automotive glass and services business as well as other PPG businesses. These various plant closures have resulted in partial and full windups, and related settlement charges, of pension plans for various hourly and salary employees employed by these locations. The charges are recorded for the individual plans when a particular windup is approved by the Canadian pension authorities and the Company has made all contributions to the individual plan. The Company recorded settlement charges of $7 million and $2 million in in the third quarter of 2015 and 2014, respectively. Additional windup charges of $50 million to $65 million will be taken in 2016 related to these plant closures. Cash contributions related to these windups are expected to be in the range of $10 million to $20 million in 2016.