Schedule II Consolidated Valuation and Qualifying Accounts Schedule II Consolidated Valuation and Qualifying Accounts - LLC (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount		$ 77	$ 44	$ 42	$ 40
Valuation Allowances and Reserves, Charged to Cost and Expense		56	47	43
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction		28	45	41
Reserves not deducted from assets [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	[1]	11	12	13	13
Valuation Allowances and Reserves, Charged to Cost and Expense	[1]	3	4	6
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction	[1]	4	5	6
MidAmerican Funding, LLC and Subsidiaries [Member] | SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount		12	5	7	7
Valuation Allowances and Reserves, Charged to Cost and Expense		12	9	8
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction		5	11	8
MidAmerican Funding, LLC and Subsidiaries [Member] | Reserves not deducted from assets [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount		11	12	13	$ 13
Valuation Allowances and Reserves, Charged to Cost and Expense		3	4	6
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction		$ 4	$ 5	$ 6

[1] Reserves not deducted from assets relate primarily to estimated liabilities for losses retained by BHE for workers compensation, public liability and property damage claims.