Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2025

Retirement Benefits [Abstract]

Components of Provision for Net Periodic Benefit Cost (Credit)

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

	Pension Benefits						Other Postretirement Benefits
Period Ended March 31,	2025			2024			2025			2024
(millions)
Service cost	$	19		$	22		$	3		$	3
Interest cost		108			109			14			14
Expected return on plan assets		(169	)		(204	)		(40	)		(42	)
Amortization of prior service     (credit) cost		—			—			(6	)		(9	)
Net actuarial (gain) loss		—			(170	)		—			(32	)
Curtailments(1)		—			(31	)		—			(4	)
Plan amendment		—			22			—			—
Net periodic benefit (credit) cost	$	(42	)	$	(252	)	$	(29	)	$	(70	)

(1)2024 amounts relate primarily to the East Ohio Transaction.