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Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Net Periodic Benefit Cost

The components of Dominion Energy's provision for net periodic benefit cost (credit) were as follows:

 

 

 

Pension Benefits

 

 

Other Postretirement Benefits

 

 

 

2017

 

 

2016

 

 

2017

 

 

2016

 

(millions)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended June 30,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$

34

 

 

$

28

 

 

$

6

 

 

$

8

 

Interest cost

 

 

87

 

 

 

78

 

 

 

14

 

 

 

17

 

Expected return on plan assets

 

 

(161

)

 

 

(139

)

 

 

(31

)

 

 

(30

)

Amortization of prior service cost (credit)

 

 

1

 

 

 

1

 

 

 

(13

)

 

 

(7

)

Amortization of net actuarial loss

 

 

41

 

 

 

27

 

 

 

3

 

 

 

2

 

Net periodic benefit cost (credit)

 

$

2

 

 

$

(5

)

 

$

(21

)

 

$

(10

)

Six Months Ended June 30,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$

69

 

 

$

57

 

 

$

13

 

 

$

16

 

Interest cost

 

 

173

 

 

 

155

 

 

 

30

 

 

 

34

 

Expected return on plan assets

 

 

(320

)

 

 

(278

)

 

 

(63

)

 

 

(59

)

Amortization of prior service cost (credit)

 

 

1

 

 

 

1

 

 

 

(25

)

 

 

(14

)

Amortization of net actuarial loss

 

 

81

 

 

 

55

 

 

 

6

 

 

 

3

 

Settlements

 

 

1

 

 

 

—

 

 

 

—

 

 

 

—

 

Net periodic benefit cost (credit)

 

$

5

 

 

$

(10

)

 

$

(39

)

 

$

(20

)

 
Dominion Energy Gas Holdings, LLC  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Net Periodic Benefit Cost

The components of Dominion Energy Gas' provision for net periodic benefit credit for employees represented by collective bargaining units were as follows:

 

 

 

Pension Benefits

 

 

Other Postretirement Benefits

 

 

 

2017

 

 

2016

 

 

2017

 

 

2016

 

(millions)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended June 30,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$

4

 

 

$

4

 

 

$

1

 

 

$

2

 

Interest cost

 

 

8

 

 

 

7

 

 

 

3

 

 

 

4

 

Expected return on plan assets

 

 

(36

)

 

 

(34

)

 

 

(6

)

 

 

(7

)

Amortization of prior service credit

 

 

—

 

 

 

—

 

 

 

(1

)

 

 

—

 

Amortization of net actuarial loss

 

 

4

 

 

 

4

 

 

 

—

 

 

 

1

 

Net periodic benefit credit

 

$

(20

)

 

$

(19

)

 

$

(3

)

 

$

—

 

Six Months Ended June 30,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$

8

 

 

$

7

 

 

$

2

 

 

$

3

 

Interest cost

 

 

15

 

 

 

15

 

 

 

6

 

 

 

7

 

Expected return on plan assets

 

 

(71

)

 

 

(67

)

 

 

(12

)

 

 

(12

)

Amortization of prior service credit

 

 

—

 

 

 

—

 

 

 

(1

)

 

 

—

 

Amortization of net actuarial loss

 

 

8

 

 

 

7

 

 

 

1

 

 

 

1

 

Net periodic benefit credit

 

$

(40

)

 

$

(38

)

 

$

(4

)

 

$

(1

)