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Employee Benefit Plans
 9 Months Ended
Sep. 30, 2012
Compensation and Retirement Disclosure [Abstract]  
Employee Benefit Plans
Employee Benefit Plans
The components of Dominion's provision for net periodic benefit cost were as follows:
 
Pension Benefits
 
OPEB
 
2012
 
2011
 
2012
 
2011
(millions)
 
 
 
 
 
 
 
Three Months Ended September 30,

 

 

 

Service cost
$
29

 
$
27

 
$
11

 
$
12

Interest cost
67

 
65

 
20

 
24

Expected return on plan assets
(108
)
 
(110
)
 
(19
)
 
(21
)
Amortization of prior service credit
—

 
—

 
(4
)
 
(3
)
Amortization of net loss
33

 
24

 
2

 
3

Settlements and curtailments(1)
—

 
—

 
(4
)
 
—

Net periodic benefit cost
$
21

 
$
6

 
$
6

 
$
15

Nine Months Ended September 30,

 

 

 

Service cost
$
87

 
$
81

 
$
33

 
$
36

Interest cost
201

 
194

 
60

 
71

Expected return on plan assets
(323
)
 
(331
)
 
(60
)
 
(60
)
Amortization of prior service cost (credit)
2

 
2

 
(10
)
 
(10
)
Amortization of net loss
99

 
72

 
5

 
9

Settlements and curtailments(1)
—

 
—

 
(4
)
 
(1
)
Net periodic benefit cost
$
66

 
$
18

 
$
24

 
$
45


(1) 2012 amount relates to the sale of Salem Harbor.

Employer Contributions
During the nine months ended September 30, 2012, Dominion made no contributions to its defined benefit pension plans or OPEB plans. Dominion expects to contribute approximately $16 million to its OPEB plans through Voluntary Employees' Beneficiary Associations during the remainder of 2012.