Statements of Comprehensive Income (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
MidAmerican Energy Company [Member]
Net income	$ 157	$ 103
Other comprehensive income (loss), net of tax:
Unrealized gains on available-for-sale securities, net of tax of $1 and $1	1	0
Unrealized gains on cash flow hedges, net of tax of $10 and $12	14	18
Total other comprehensive income, net of tax	15	18
Comprehensive income	$ 172	$ 121