Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2023

Compensation And Retirement Disclosure [Abstract]

Net Periodic Benefit Cost (Credit)

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 (expense) 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
Three Months Ended March 31,	2023			2022			2023			2022
(millions)
Service cost	$	24		$	36		$	3		$	6
Interest cost		111			83			15			11
Expected return on plan assets		(216	)		(223	)		(38	)		(48	)
Amortization of prior service cost (credit)		—			—			(9	)		(10	)
Amortization of net actuarial (gain) loss		—			40			(1	)		—
Net periodic benefit (credit) cost	$	(81	)	$	(64	)	$	(30	)	$	(41	)