Consolidated Statements of Comprehensive Income (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
MidAmerican Funding, LLC and Subsidiaries [Domain]
Net income	$ 30	$ 22	$ 185	$ 122
Other comprehensive income (loss), net of tax:
Unrealized gains on available-for-sale securities, net of tax of $-, $-, $1 and $1	0	0	1	0
Unrealized gains (losses) on cash flow hedges, net of tax of $6, $(10), $16 and $2	9	(14)	23	4
Total other comprehensive income (loss), net of tax	9	(14)	24	4
Comprehensive income	39	8	209	126
Comprehensive income attributable to noncontrolling interests	0	1	0	1
Comprehensive income attributable to MidAmerican Funding member	$ 39	$ 7	$ 209	$ 125