Related Party Transactions - MidAmerican Funding (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Credit facilities	$ 11,281,000,000	$ 11,030,000,000
Related party, cash received (paid) for income taxes	1,441,000,000	1,504,000,000	$ 942,000,000
MidAmerican Funding, LLC
Related Party Transaction [Line Items]
Note payable to affiliate	$ 189,000,000	177,000,000
Maximum debt to capitalization ratio	0.67
Minimum interest coverage ratio	2.2
MidAmerican Funding, LLC \| Affiliated entity
Related Party Transaction [Line Items]
Expense reimbursement	$ 65,000,000	46,000,000	41,000,000
Due from affiliate, current	11,000,000	13,000,000
Accounts payable to affiliates	17,000,000	13,000,000
Affiliated notes receivable	124,000,000	146,000,000
Due to affiliate, noncurrent	63,000,000	49,000,000
MidAmerican Funding, LLC \| BHE
Related Party Transaction [Line Items]
Related party expense	72,000,000	15,000,000	14,000,000
Income tax receivable (payable), related parties current	80,000,000	(14,000,000)
Related party, cash received (paid) for income taxes	751,000,000	715,000,000	456,000,000
MidAmerican Funding, LLC \| Northern Natural Gas and BNSF Railway Company
Related Party Transaction [Line Items]
Purchases from related party	132,000,000	129,000,000	139,000,000
MidAmerican Funding, LLC \| BHE Renewables
Related Party Transaction [Line Items]
Purchases from related party		7,000,000
MidAmerican Funding, LLC \| Revolving Credit Arrangement, $300 million \| Line of credit \| MHC, Inc. \| BHE
Related Party Transaction [Line Items]
Maximum amount available	300,000,000
Note payable to affiliate	$ 189,000,000	$ 177,000,000
Weighted average interest rate	0.353%	0.397%
MidAmerican Funding, LLC \| Revolving Credit Arrangement, $100 million \| Line of credit \| MHC, Inc. \| BHE
Related Party Transaction [Line Items]
Credit facilities	$ 100,000,000
Notes receivable - affiliate	0	$ 0
Property, Plant and Equipment \| MidAmerican Funding, LLC
Related Party Transaction [Line Items]
Distribution of corporate aircraft to parent	$ 0	$ 0	$ 8,000,000

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