Employee Benefit Plans - EEGH (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 6	$ 8
Defined contribution plan cost	177	159	$ 137
EEGH
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan cost	12	6	5
EEGH | MidAmerican Energy Pension Plan | Pension
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	8	14	18
EEGH | MidAmerican Energy Retiree Health and Welfare Plan | Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 2	$ 2	$ 10