Employee Benefit Plans - EEGH (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
EEGH
Defined Benefit Plan Disclosure [Line Items]
Pension plan liability, noncurrent	$ 95	$ 95
Pension Plan | EEGH | MidAmerican Energy Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	6
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	5
Other Postretirement Plans | EEGH | MidAmerican Energy Retiree Health and Welfare Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 1