Long-term Debt - MidAmerican Funding LLC (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Par value	$ 52,313
BHE restricted net assets	23,200
MidAmerican Funding, LLC
Debt Instrument [Line Items]
BHE restricted net assets	6,000
MidAmerican Funding LLC | 6.927% Senior Bonds, due 2029 | MidAmerican Funding LLC
Debt Instrument [Line Items]
Par value	$ 239
Stated rate	6.927%
Subsidiary debt	$ 240	$ 240