Regulatory Matters - MEC (Details) $ in Millions	Mar. 31, 2021 USD ($)
MidAmerican Energy Company [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Adjustment Clause Accounts Receivable Payable	$ 245

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.

No definition available.

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