Supplemental Cash Flow Disclosures - MidAmerican Funding (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Cash Flow Statements, Captions [Line Items]
Interest paid, net of amounts capitalized	$ 2,109	$ 2,071	$ 2,041
Income taxes received, net	1,370	1,863	1,309
Accruals related to property, plant and equipment additions	1,494	1,049	834
MidAmerican Funding, LLC
Condensed Cash Flow Statements, Captions [Line Items]
Interest paid, net of amounts capitalized	317	309	296
Income taxes received, net	855	845	751
Accruals related to property, plant and equipment additions	$ 193	$ 168	$ 257