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EMPLOYEE BENEFITPLANS (Tables)
12 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]  
Pension plan and other postretirement benefit plan obligations and plan assets and includes a statement of the plans funded status

The following table summarizes the changes in pension plan and other postretirement benefit plan obligations and plan assets and includes a statement of the plans’ funded status for Dominion Energy and Dominion Energy Gas (for employees represented by collective bargaining units):

 

     Pension Benefits     Other Postretirement Benefits  
Year Ended December 31,   2017     2016     2017     2016  
(millions, except percentages)                        

Dominion Energy

       

Changes in benefit obligation:

       

Benefit obligation at beginning of year

  $ 8,132     $ 6,391     $ 1,478     $ 1,430  

Dominion Energy Questar Combination

          817             85  

Service cost

    138       118       26       31  

Interest cost

    345       317       60       65  

Benefits paid

    (323     (286     (83     (83

Actuarial (gains) losses during the year

    830       784       119       166  

Plan amendments(1)

    5             (73     (216

Settlements and curtailments(2)

    (75     (9     2        

Benefit obligation at end of year

  $ 9,052     $ 8,132     $ 1,529     $ 1,478  

Changes in fair value of plan assets:

       

Fair value of plan assets at beginning of year

  $ 7,016     $ 6,166     $ 1,512     $ 1,382  

Dominion Energy Questar Combination

          704             45  

Actual return (loss) on plan assets

    1,327       426       236       108  

Employer contributions

    118       15       13       12  

Benefits paid

    (323     (286     (32     (35

Settlements(2)

    (76     (9            

Fair value of plan assets at end of year

  $ 8,062     $ 7,016     $ 1,729     $ 1,512  

Funded status at end of year

  $ (990   $ (1,116   $ 200     $ 34  

Amounts recognized in the Consolidated Balance Sheets at December 31:

       

Noncurrent pension and other postretirement benefit assets

  $ 1,117     $ 930     $ 261     $ 148  

Other current liabilities

    (8     (43           (5

Noncurrent pension and other postretirement benefit liabilities

    (2,099     (2,003     (61     (109

Net amount recognized

  $ (990   $ (1,116   $ 200     $ 34  

Significant assumptions used to determine benefit obligations as of December 31:

       

Discount rate

    3.80%–3.81     3.31%–4.50     3.76%       3.92%–4.47

Weighted average rate of increase for compensation

    4.09     4.09     3.95%-4.11%       3.29

Dominion Energy Gas

       

Changes in benefit obligation:

       

Benefit obligation at beginning of year

  $ 683     $ 608     $ 320     $ 292  

Service cost

    15       13       4       5  

Interest cost

    30       30       12       14  

Benefits paid

    (33     (32     (19     (19

Actuarial (gains) losses during the year

    78       64       34       28  

Plan amendments(1)

                (61      

Benefit obligation at end of year

  $ 773     $ 683     $ 290     $ 320  

Changes in fair value of plan assets:

       

Fair value of plan assets at beginning of year

  $ 1,542     $ 1,467     $ 299     $ 283  

Actual return (loss) on plan assets

    294       107       41       23  

Employer contributions

                12       12  

Benefits paid

    (33     (32     (19     (19

Fair value of plan assets at end of year

  $ 1,803     $ 1,542     $ 333     $ 299  

Funded status at end of year

  $ 1,030     $ 859     $ 43     $ (21

Amounts recognized in the Consolidated Balance Sheets at December 31:

       

Noncurrent pension and other postretirement benefit assets

  $ 1,030     $ 859     $ 57     $  

Noncurrent pension and other postretirement benefit liabilities(3)

                (14     (21

Net amount recognized

  $ 1,030     $ 859     $ 43     $ (21

Significant assumptions used to determine benefit obligations as of December 31:

       

Discount rate

    3.81     4.50     3.76     4.47

Weighted average rate of increase for compensation

    4.11     4.11     n/a       n/a  

 

(1) 2017 amounts relate primarily to a plan amendment that changed post-65 retiree medical coverage for certain current and future Local 69 retirees effective July 1, 2017. 2016 amount relates primarily to a plan amendment that changed post-65 retiree medical coverage for certain current and future Local 50 retirees effective April 1, 2017.
(2) 2017 amount relates primarily to settlement and curtailment as a result of the voluntary and involuntary separation programs at Dominion Energy Questar. 2016 amount relates primarily to a settlement for certain executives.
(3) Reflected in other deferred credits and other liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.
Benefit obligation in excess of plan asset

The following table provides information on the benefit obligations and fair value of plan assets for plans with a benefit obligation in excess of plan assets for Dominion Energy and Dominion Energy Gas (for employees represented by collective bargaining units):

 

      Pension Benefits     

Other Postretirement

Benefits

 
As of December 31,    2017      2016      2017      2016  
(millions)                            

Dominion Energy

           

Benefit obligation

   $ 8,209      $ 7,386        $191        $470  

Fair value of plan assets

     6,103        5,340        156        356  

Dominion Energy Gas

           

Benefit obligation

   $      $        $157        $320  

Fair value of plan assets

                   143        299  

 

 

Accumulated benefit obligation in excess of plan assets

The following table provides information on the ABO and fair value of plan assets for Dominion Energy’s pension plans with an ABO in excess of plan assets:

 

As of December 31,    2017      2016  
(millions)              

Accumulated benefit obligation

   $ 7,392      $ 5,987  

Fair value of plan assets

     6,103        4,653  

 

Benefit payments expected future service

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid for Dominion Energy’s and Dominion Energy Gas’ (for employees represented by collective bargaining units) plans:

 

      Estimated Future Benefit Payments  
      Pension Benefits     

Other Postretirement

Benefits

 
(millions)              

Dominion Energy

     

2018

     $373        $  99  

2019

     378        101  

2020

     402        102  

2021

     418        102  

2022

     434        102  
2023-2027    2,437      486  

Dominion Energy Gas

     

2018

     $  35        $  19  

2019

     37        19  

2020

     38        20  

2021

     39        20  

2022

     41        20  

2023-2027

     214        94  

 

Fair values of pension and post retirement plan assets by asset category

The fair values of Dominion Energy’s and Dominion Energy Gas’ (for employees represented by collective bargaining units) other postretirement plan assets by asset category are as follows:

 

At December 31,    2017      2016  
      Level 1      Level 2      Level 3      Total      Level 1      Level 2      Level 3      Total  
(millions)                                                        

Dominion Energy

                       

Cash and cash equivalents

     $    1        $    2        $—      $ 3        $    1        $  1        $—        $       2  

Common and preferred stocks:

                       

U.S.

     636                      636        571                      571  

International

     196                      196        143                      143  

Insurance contracts

            21               21               19               19  

Corporate debt instruments

     2        44               46        2        40               42  

Government securities

     1        41               42        1        30               31  

Total recorded at fair value

     $836        $108        $—      $ 944        $718        $90        $—        $   808  

Assets recorded at NAV(1):

                       

Common/collective trust funds

              689                 621  

Alternative investments:

                       

Real estate funds

              9                 9  

Private equity funds

              73                 59  

Debt funds

              11                 12  

Hedge funds

                                1                                   1  

Total recorded at NAV

                              $ 783                                   $   702  

Total investments(2)

                              $ 1,727                                   $1,510  

Dominion Energy Gas

                       

Common and preferred stocks:

                       

U.S.

     $130        $  —        $—      $ 130        $121        $—        $—        $   121  

International

     33                      33        24                      24  

Total recorded at fair value

     $163        $  —        $—      $ 163        $145        $—        $—        $   145  

Assets recorded at NAV(1):

                       

Common/collective trust funds

              154                 140  

Alternative investments:

                       

Real estate funds

              1                 1  

Private equity funds

              15                 12  

Debt funds

                                                                  1  

Total recorded at NAV

                              $ 170                                   $   154  

Total investments

                              $ 333                                   $   299  

 

(1) These investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient which are not required to be categorized in the fair value hierarchy.
(2) Excludes net assets related to pending sales of securities of $1 million, net accrued income of $2 million, and includes net assets related to pending purchases of securities of $1 million at December 31, 2017. Excludes net assets related to pending sales of securities of $5 million, net accrued income of $2 million, and includes net assets related to pending purchases of securities of $5 million at December 31, 2016.
Net periodic benefit (credit) cost and amounts recognized in other comprehensive income and regulatory assets and liabilities

The components of the provision for net periodic benefit (credit) cost and amounts recognized in other comprehensive income and regulatory assets and liabilities for Dominion Energy’s and Dominion Energy Gas’ (for employees represented by collective bargaining units) plans are as follows:

 

      Pension Benefits     Other Postretirement Benefits  
Year Ended December 31,    2017     2016     2015     2017     2016     2015  
(millions, except percentages)                                     

Dominion Energy

            

Service cost

   $ 138     $ 118     $ 126     $ 26     $ 31     $ 40  

Interest cost

     345       317       287       60       65       67  

Expected return on plan assets

     (639     (573     (531     (128     (118     (117

Amortization of prior service (credit) cost

     1       1       2       (51     (35     (27

Amortization of net actuarial loss

     162       111       160       13       8       6  

Settlements and curtailments

           1                          

Net periodic benefit (credit) cost

   $ 7     $ (25   $ 44     $ (80   $ (49   $ (31

Changes in plan assets and benefit obligations recognized in other comprehensive income and regulatory assets and liabilities:

            

Current year net actuarial (gain) loss

   $ 142     $ 931     $ 159     $ 12     $ 178     $ (18

Prior service (credit) cost

     5                   (73     (216     (31

Settlements and curtailments

     1       (1           2              

Less amounts included in net periodic benefit cost:

            

Amortization of net actuarial loss

     (162     (111     (160     (13     (8     (6

Amortization of prior service credit (cost)

     (1     (1     (2     51       35       27  

Total recognized in other comprehensive income and regulatory assets and liabilities

   $ (15   $ 818     $ (3   $ (21   $ (11   $ (28

Significant assumptions used to determine periodic cost:

            

Discount rate

     3.31%-4.50     2.87%-4.99     4.40     3.92%-4.47     3.56%-4.94     4.40

Expected long-term rate of return on plan assets

     8.75     8.75     8.75     8.50     8.50     8.50

Weighted average rate of increase for compensation

     4.09     4.22     4.22     3.29     4.22     4.22

Healthcare cost trend rate(1)

           7.00     7.00     7.00

Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)(1)

           5.00     5.00     5.00

Year that the rate reaches the ultimate trend rate(1)(2)

                             2021       2020       2019  

Dominion Energy Gas

            

Service cost

   $ 15     $ 13     $ 15     $ 4     $ 5     $ 7  

Interest cost

     30       30       27       12       14       14  

Expected return on plan assets

     (141     (134     (126     (24     (23     (24

Amortization of prior service (credit) cost

                 1       (3     1       (1

Amortization of net actuarial loss

     16       13       20       2       1       2  

Net periodic benefit (credit) cost

   $ (80   $ (78   $ (63   $ (9   $ (2   $ (2

Changes in plan assets and benefit obligations recognized in other comprehensive income and regulatory assets and liabilities:

            

Current year net actuarial (gain) loss

   $ (75   $ 91     $ 97     $ 18     $ 28     $ (9

Prior service cost

                       (61            

Less amounts included in net periodic benefit

cost:

            

Amortization of net actuarial loss

     (16     (13     (20     (2     (1     (2

Amortization of prior service credit (cost)

                 (1     3       (1     1  

Total recognized in other comprehensive income and regulatory assets and liabilities

   $ (91   $ 78     $ 76     $ (42   $ 26     $ (10

Significant assumptions used to determine periodic cost:

            

Discount rate

     4.50     4.99     4.40     4.47     4.93     4.40

Expected long-term rate of return on plan assets

     8.75     8.75     8.75     8.50     8.50     8.50

Weighted average rate of increase for compensation

     4.11     3.93     3.93     4.11     3.93     3.93

Healthcare cost trend rate(1)

           7.00     7.00     7.00

Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)(1)

           5.00     5.00     5.00

Year that the rate reaches the ultimate trend rate(1)

                             2021       2020       2019  

 

(1) Assumptions used to determine net periodic cost for the following year.
(2) The Society of Actuaries model used to determine healthcare cost trend rates was updated in 2014. The new model converges to the ultimate trend rate much more quickly than previous models.
Components of AOCI and regulatory assets and liabilities that have not been recognized as components of periodic benefit (credit) cost

The components of AOCI and regulatory assets and liabilities for Dominion Energy’s and Dominion Energy Gas’ (for employees represented by collective bargaining units) plans that have not been recognized as components of net periodic benefit (credit) cost are as follows:

 

      Pension Benefits     

Other

Postretirement

Benefits

 
At December 31,    2017      2016      2017     2016  
(millions)                           

Dominion Energy

          

Net actuarial loss

   $ 3,181      $ 3,200      $ 283     $ 283  

Prior service (credit) cost

     8        4        (440     (419

Total(1)

   $ 3,189      $ 3,204      $ (157   $ (136

Dominion Energy Gas

          

Net actuarial loss

   $ 367      $ 458      $ 76     $ 60  

Prior service (credit) cost

                   (52     7  

Total(2)

   $ 367      $ 458      $ 24     $ 67  

 

(1) As of December 31, 2017, of the $3.2 billion and $(157) million related to pension benefits and other postretirement benefits, $1.9 billion and $(87) million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities. As of December 31, 2016, of the $3.2 billion and $(136) million related to pension benefits and other postretirement benefits, $1.9 billion and $(103) million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities.
(2) As of December 31, 2017, of the $367 million related to pension benefits, $134 million is included in AOCI, with the remainder included in regulatory assets and liabilities; the $24 million related to other postretirement benefits is included entirely in regulatory assets and liabilities. As of December 31, 2016, of the $458 million related to pension benefits, $167 million is included in AOCI, with the remainder included in regulatory assets and liabilities; the $67 million related to other postretirement benefits is included entirely in regulatory assets and liabilities.
Components of AOCI and regulatory assets and liabilities that are expected to be amortized as components of periodic benefit cost in 2017

The following table provides the components of AOCI and regulatory assets and liabilities for Dominion Energy’s and Dominion Energy Gas’ (for employees represented by collective bargaining units) plans as of December 31, 2017 that are expected to be amortized as components of net periodic benefit (credit) cost in 2018:

 

      Pension Benefits     

Other
Postretirement

Benefits

 
(millions)              

Dominion Energy

     

Net actuarial loss

     $193        $ 11  

Prior service (credit) cost

     1        (52

Dominion Energy Gas

     

Net actuarial loss

     $  19        $   3  

Prior service (credit) cost

            (4

 

Effect of one percentage point change on benefit plans

A one percentage point change in assumed healthcare cost trend rates would have had the following effects for Dominion Energy’s and Dominion Energy Gas’ (for employees represented by collective bargaining units) other postretirement benefit plans:

 

      Other Postretirement Benefits  
     

One percentage

point increase

    

One percentage

point decrease

 
(millions)              

Dominion Energy

     

Effect on net periodic cost for 2018

     $  24        $  (15

Effect on other postretirement benefit obligation at December 31, 2017

     158        (132

Dominion Energy Gas

     

Effect on net periodic cost for 2018

     $    4        $    (3

Effect on other postretirement benefit obligation at December 31, 2017

     31        (26