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Schedule I Condensed Financial Statements (Parent Company Only) - Notes - MidAmerican Funding (Details) - MidAmerican Funding LLC - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jan. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]        
Dividends declared and paid   $ 69    
Subsequent event        
Condensed Financial Statements, Captions [Line Items]        
Dividends declared and paid $ 100      
MHC, Inc.        
Condensed Financial Statements, Captions [Line Items]        
Accounts payable to affiliates   $ 81 $ 12 $ 12