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v3.23.3

Employee Benefit Plans | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Employee Benefit Plans | Note 20. Employee Benefit Plans Net Periodic Benefit (Credit) Cost The service cost component of net periodic benefit (credit) cost is reflected in other operations and maintenance expense in Dominion Energy’s Consolidated Statements of Income, except for $4 million and $12 million for the three and nine months ended September 30, 2023, respectively, and $7 million and $19 million for the three and nine months ended September 30, 2022, respectively, presented in discontinued operations. The non-service cost components of net periodic benefit (credit) cost are reflected in other income (expense) in Dominion Energy's Consolidated Statements of Income, except for $(11) million and $(34) million for the three and nine months ended September 30, 2023, respectively, and $(11) million and $(32) million for the three and nine months ended September 30, 2022, respectively, presented in discontinued operations. The components of Dominion Energy’s provision for net periodic benefit cost (credit) are as follows:
|  | Pension Benefits |  |  | Other Postretirement Benefits |
|  | Quarter-to-Date |  |  | Year-to-Date |  |  | Quarter-to-Date |  |  | Year-to-Date |
Period Ended September 30, |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 24 |  |  | $ | 35 |  |  | $ | 72 |  |  | $ | 106 |  |  | $ | 3 |  |  | $ | 5 |  |  | $ | 10 |  |  | $ | 16 |
Interest cost |  |  | 111 |  |  |  | 83 |  |  |  | 332 |  |  |  | 250 |  |  |  | 15 |  |  |  | 11 |  |  |  | 46 |  |  |  | 34 |
Expected return on plan assets |  |  | (216 | ) |  |  | (221 | ) |  |  | (648 | ) |  |  | (667 | ) |  |  | (37 | ) |  |  | (47 | ) |  |  | (113 | ) |  |  | (143 | )
Amortization of prior service cost (credit) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (10 | ) |  |  | (10 | ) |  |  | (28 | ) |  |  | (29 | )
Amortization of net actuarial (gain) loss |  |  | — |  |  |  | 39 |  |  |  | — |  |  |  | 119 |  |  |  | (1 | ) |  |  | — |  |  |  | (4 | ) |  |  | (1 | )
Curtailment(1) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (8 | ) |  |  | — |  |  |  | (8 | )
Net periodic benefit (credit) cost |  | $ | (81 | ) |  | $ | (64 | ) |  | $ | (244 | ) |  | $ | (192 | ) |  | $ | (30 | ) |  | $ | (49 | ) |  | $ | (89 | ) |  | $ | (131 | )
(1) 2022 amounts relate primarily to Dominion Energy's sale of Hope. Employer Contributions During the three and nine months ended September 30, 2023, Dominion Energy made no contributions to its qualified defined benefit pension plans or other postretirement benefit plans. Dominion Energy is no t required to make any contributions to its qualified defined benefit pension plans or to VEBAs associated with its other postretirement plans in 2023. Dominion Energy considers voluntary contributions from time to time, either in the form of cash or equity securities.

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