Summary of Significant Accounting Policies - BHE - Schedule of Allowance for Credit Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 102	$ 106	$ 108
Charged to operating costs and expenses, net	61	68	43
Write-offs, net	(84)	(72)	(45)
Ending balance	$ 79	$ 102	$ 106