Consolidated Statements of Cash Flows (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]
Cash flows from operating activities:
Net income	$ 350	$ 355	$ 319
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	403	392	336
Deferred income taxes and amortization of investment tax credits	103	178	463
Changes in other assets and liabilities	57	49	33
Other, net	(27)	(21)	(27)
Changes in other operating assets and liabilities:
Receivables, net	(58)	(14)	27
Inventories	13	(40)	(40)
Derivative collateral, net	5	4	(12)
Contributions to pension and other postretirement benefit plans, net	8	(53)	(41)
Accounts payable	23	12	(26)
Taxes accrued, net	(164)	420	(255)
Other current assets and liabilities	22	(6)	(7)
Net cash flows from operating activities	735	1,276	770
Net cash flows from investing activities:
Utility construction expenditures	(1,026)	(645)	(565)
Purchases of available-for-sale securities	(114)	(64)	(77)
Proceeds from sales of available-for-sale securities	102	45	70
Proceeds from sales of other investments	15	7	0
Other, net	11	18	13
Net cash flows from investing activities	(1,012)	(639)	(559)
Net cash flows from financing activities:
Dividends	(125)	(1)	(1)
Proceeds from long-term debt	947	0	0
Repayments of long-term debt	(670)	(283)	(412)
Redemption of preferred securities	(28)	0	0
Other, net	(7)	0	0
Net cash flows from financing activities	117	(284)	(413)
Net change in cash and cash equivalents	(160)	353	(202)
Cash and cash equivalents at beginning of year	354	1	203
Cash and cash equivalents at end of year	$ 194	$ 354	$ 1