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Employee Benefit Plans | 3 Months Ended
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Mar. 31, 2022
Compensation And Retirement Disclosure [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. The non-service cost components of net periodic benefit (credit) cost are reflected in other income in Dominion Energy’s Consolidated Statements of Income. The components of Dominion Energy’s provision for net periodic benefit cost (credit) are as follows:
|  | Pension Benefits |  |  | Other Postretirement Benefits |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Three Months Ended March 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 36 |  |  | $ | 42 |  |  | $ | 6 |  |  | $ | 6 |
Interest cost |  |  | 83 |  |  |  | 79 |  |  |  | 11 |  |  |  | 12 |
Expected return on plan assets |  |  | (223 | ) |  |  | (208 | ) |  |  | (48 | ) |  |  | (44 | )
Amortization of prior service (credit) cost |  |  | — |  |  |  | — |  |  |  | (10 | ) |  |  | (10 | )
Amortization of net actuarial loss |  |  | 40 |  |  |  | 48 |  |  |  | — |  |  |  | 1 |
Settlements |  |  | — |  |  |  | (2 | ) |  |  | — |  |  |  | — |
Net periodic benefit (credit) cost |  | $ | (64 | ) |  | $ | (41 | ) |  | $ | (41 | ) |  | $ | (35 | )
Employer Contributions During the three months ended March 31, 2022, Dominion Energy made no contributions to its qualified defined benefit pension plans or other postretirement benefit plans. Dominion Energy is not required to make any contributions to its qualified defined benefit pension plans or to VEBAs associated with its other postretirement plans in 2022. Dominion Energy considers voluntary contributions from time to time, either in the form of cash or equity securities.

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