Consolidated Statements of Comprehensive Income (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
MidAmerican Energy Company [Member]
Net income	$ 350	$ 355	$ 319
Other comprehensive income (loss):
Unrealized gains on available-for-sale securities, net of tax of $1, $2 and $-	1	3	1
Unrealized gains (losses) on cash flow hedges, net of tax of $9, $4 and $(3)	12	7	(6)
Total other comprehensive income (loss), net of tax	13	10	(5)
Comprehensive income	$ 363	$ 365	$ 314