Employee Benefit Plans - EEGH - GT&S Transaction (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Distribution of net assets				$ 699
Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		$ 8	$ 14
Net periodic benefit cost (credit)		1	6	(10)
EEGH | MidAmerican Energy Pension Plan | Pension
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		14	18	3
EEGH | MidAmerican Energy Retiree Health and Welfare Plan | Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		2	10	2
EEGH | BHE GT&S, LLC Defined Contribution Savings Plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer contribution		$ 6	$ 5	1
EEGH | Dominion Energy Pension Plan | Pension
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost (credit)				(14)
EEGH | Dominion Energy Retiree Health and Welfare Plan | Pension
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost (credit)				$ (5)
EEGH | Disposed of by means other than sale | Dominion Energy Questar Pipeline
Defined Benefit Plan Disclosure [Line Items]
Distribution of net assets	$ 699
EEGH | Disposed of by means other than sale | Pension plan asset | Dominion Energy Questar Pipeline
Defined Benefit Plan Disclosure [Line Items]
Distribution of net assets	$ 895