Short-term Debt and Credit Facilities - MidAmerican Funding (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	$ 11,596,000,000	$ 10,705,000,000
MidAmerican Funding, LLC | Unsecured 364-day credit facility, $4 million, expiring June | MHC, Inc. | Line of credit
Line of Credit Facility [Line Items]
Line of credit, maximum capacity	4,000,000
Outstanding balance on credit facility	$ 0	$ 0