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Other Postretirement Benefits
9 Months Ended
Sep. 30, 2017
Retirement Benefits [Abstract]  
Other Postretirement Benefits
Other Postretirement Benefits
Total Periodic Benefit Cost
The components of the Companies’ total periodic other postretirement benefit costs for the three and nine months ended September 30, 2017 and 2016 were as follows:
 
 
For the Three Months Ended September 30,
  
          Con Edison
          CECONY
(Millions of Dollars)
2017
2016
2017

2016
Service cost
$5
$4
$3
$3
Interest cost on accumulated other postretirement benefit obligation
11
12
9
10
Expected return on plan assets
(17)
(19)
(15)
(17)
Recognition of net actuarial loss
1
1

1
Recognition of prior service cost
(5)
(5)
(3)
(3)
TOTAL PERIODIC OTHER POSTRETIREMENT BENEFIT COST
$(5)
$(7)
$(6)
$(6)
Cost capitalized
2
2
2
2
Reconciliation to rate level
(1)
7

6
Cost charged to operating expenses
$(4)
$2
$(4)
$2


 
For the Nine Months Ended September 30,
  
          Con Edison
          CECONY
(Millions of Dollars)
2017
2016
2017
2016
Service cost
$15
$13
$10
$10
Interest cost on accumulated other postretirement benefit obligation
34
36
28
30
Expected return on plan assets
(52)
(58)
(45)
(50)
Recognition of net actuarial loss/(gain)
2
4
(2)
2
Recognition of prior service cost
(13)
(15)
(9)
(11)
TOTAL PERIODIC OTHER POSTRETIREMENT BENEFIT COST
$(14)
$(20)
$(18)
$(19)
Cost capitalized
6
5
7
5
Reconciliation to rate level
(3)
20
(1)
19
Cost charged to operating expenses
$(11)
$5
$(12)
$5



Contributions
During the first nine months of 2017, Con Edison contributed $16 million, of which $8 million was contributed by CECONY, to the other postretirement benefit plans. The Companies' policy is to fund the total periodic benefit cost of the plans to the extent tax deductible.