Revenue from Contracts with Customers - BHE - Real Estate Services (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Operating revenue	$ 6,346	$ 6,030
Real estate
Disaggregation of Revenue [Line Items]
Operating revenue	875	1,207
HomeServices
Disaggregation of Revenue [Line Items]
Operating revenue	875	1,207
HomeServices \| Real estate
Disaggregation of Revenue [Line Items]
Total Customer Revenue	811	1,112
Other revenue	64	95
Operating revenue	875	1,207
HomeServices \| Brokerage
Disaggregation of Revenue [Line Items]
Total Customer Revenue	799	1,092
HomeServices \| Franchise
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 12	$ 20

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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