Summary of Significant Accounting Policies - MidAmerican Funding LLC - Narrative (Details) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill impairment	$ 0	$ 0	$ 0
MidAmerican Funding, LLC
Goodwill [Line Items]
Goodwill impairment	$ 0	$ 0	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details