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Employee Benefit Plans | 3 Months Ended
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Mar. 31, 2020
Compensation And Retirement Disclosure [Abstract] |
Employee Benefit Plans | Note 20. Employee Benefit Plans Dominion Energy The components of Dominion Energy’s provision for net periodic benefit cost (credit) were as follows:
|  | Pension Benefits |  |  | Other Postretirement Benefits |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Three Months Ended March 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 43 |  |  | $ | 40 |  |  | $ | 7 |  |  | $ | 7 |
Interest cost |  |  | 91 |  |  |  | 101 |  |  |  | 15 |  |  |  | 17 |
Expected return on plan assets |  |  | (193 | ) |  |  | (177 | ) |  |  | (39 | ) |  |  | (33 | )
Amortization of prior service credit |  |  | — |  |  |  | — |  |  |  | (12 | ) |  |  | (13 | )
Amortization of net actuarial loss |  |  | 49 |  |  |  | 39 |  |  |  | 1 |  |  |  | 4 |
Settlements |  |  | — |  |  |  | 2 |  |  |  | — |  |  |  | — |
Net periodic benefit cost (credit) |  | $ | (10 | ) |  | $ | 5 |  |  | $ | (28 | ) |  | $ | (18 | )
Employer Contributions During the three months ended March 31, 2020, Dominion Energy made no contributions to its qualified defined benefit pension plans or other postretirement benefit plans. Dominion Energy does not expect to make contributions to its defined benefit pension plans and expects to contribute $12 million to other postretirement benefit plans through VEBAs, respectively, during the remainder of 2020. Dominion Energy Gas Dominion Energy Gas participates in certain Dominion Energy benefit plans as described in Note 22 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2019. See Note 19 for more information. The components of Dominion Energy Gas’ provision for net periodic benefit cost (credit) for employees represented by collective bargaining units were as follows:
|  | Pension Benefits |  |  | Other Postretirement Benefits |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Three Months Ended March 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 1 |  |  | $ | 4 |  |  | $ | 1 |  |  | $ | 1 |
Interest cost |  |  | 3 |  |  |  | 8 |  |  |  | 1 |  |  |  | 3 |
Expected return on plan assets |  |  | (14 | ) |  |  | (39 | ) |  |  | (5 | ) |  |  | (7 | )
Amortization of prior service credit |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | (1 | )
Amortization of net actuarial loss |  |  | 2 |  |  |  | 5 |  |  |  | — |  |  |  | 1 |
Net periodic benefit credit |  | $ | (8 | ) |  | $ | (22 | ) |  | $ | (4 | ) |  | $ | (3 | )
Employer Contributions During the three months ended March 31, 2020, Dominion Energy Gas made no contributions to its qualified defined benefit pension plan or other postretirement benefit plans. Dominion Energy Gas does not expect to make contributions to its qualified defined benefit pension plan and expects to contribute approximately $12 million to its other postretirement benefit plans through VEBAs during the remainder of 2020.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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