Schedule II Consolidated Valuation and Qualifying Accounts Schedule II Consolidated Valuation and Qualifying Accounts - LLC - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance		$ 31	$ 37	$ 33	$ 22
Valuation Allowances and Reserves, Charged to Cost and Expense		33	37	23
Valuation Allowances and Reserves, Deductions		39	33	21
Reserves not deducted from assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	[1]	13	11	9	9
Valuation Allowances and Reserves, Charged to Cost and Expense	[1]	7	12	6
Valuation Allowances and Reserves, Deductions	[1]	5	10	6
MidAmerican Funding, LLC and Subsidiaries [Domain] | Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance		6	7	10	10
Valuation Allowances and Reserves, Charged to Cost and Expense		7	7	7
Valuation Allowances and Reserves, Deductions		8	10	7
MidAmerican Funding, LLC and Subsidiaries [Domain] | Reserves not deducted from assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance		13	11	9	$ 9
Valuation Allowances and Reserves, Charged to Cost and Expense		7	12	6
Valuation Allowances and Reserves, Deductions		$ 5	$ 10	$ 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.