Statements of Cash Flows (MEC) (MidAmerican Energy Company [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
MidAmerican Energy Company [Member]
Cash flows from operating activities:
Net income	$ 157	$ 103
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	85	107
Deferred income taxes and amortization of investment tax credits	(16)	8
Changes in other assets and liabilities	12	13
Other, net	(8)	(4)
Changes in other operating assets and liabilities:
Receivables, net	(156)	(21)
Inventories	61	35
Derivative collateral, net	(32)	3
Pension and other postretirement benefit plans	0	3
Accounts payable	44	(2)
Taxes accrued	(31)	(211)
Other current assets and liabilities	(20)	(2)
Net cash flows from operating activities	96	32
Cash flows from investing activities:
Utility construction expenditures	(179)	(163)
Purchases of available-for-sale securities	(23)	(29)
Proceeds from sales of available-for-sale securities	22	26
Other, net	3	1
Net cash flows from investing activities	(177)	(165)
Cash flows from financing activities:
Dividends	0	(125)
Net cash flows from financing activities	0	(125)
Net change in cash and cash equivalents	(81)	(258)
Cash and cash equivalents at beginning of period	194	354
Cash and cash equivalents at end of period	$ 113	$ 96