Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2021

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, except for $3 million and $12 million for the three and nine months ended September 30, 2020, respectively, presented in discontinued operations. 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
	2021			2020			2021			2020
(millions)
Three Months Ended September 30,
Service cost	$	43		$	45		$	6		$	8
Interest cost		80			82			11			15
Expected return on plan assets		(209	)		(197	)		(43	)		(39	)
Amortization of prior service cost (credit)		—			(1	)		(11	)		(12	)
Amortization of net actuarial loss		48			58			1			1
Settlements (1)		—			3			—			—
Net periodic benefit credit	$	(38	)	$	(10	)	$	(36	)	$	(27	)
Nine Months Ended September 30,
Service cost	$	127		$	131		$	18		$	22
Interest cost		238			263			35			45
Expected return on plan assets		(625	)		(582	)		(130	)		(117	)
Amortization of prior service cost (credit)		—			—			(32	)		(37	)
Amortization of net actuarial loss		145			155			3			4
Settlements (1)		5			5			—			—
Net periodic benefit credit	$	(110	)	$	(28	)	$	(106	)	$	(83	)