Consolidated Statements of Cash Flows (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
MidAmerican Funding, LLC and Subsidiaries [Domain]
Cash flows from operating activities:
Net income	$ 341	$ 343	$ 305
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	102	175	462
Changes in other assets and liabilities	57	49	33
Other, net	(29)	(22)	(27)
Changes in other operating assets and liabilities:
Receivables, net	(60)	(13)	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	(25)
Taxes accrued, net	(164)	419	(254)
Other current assets and liabilities	22	(6)	(12)
Net cash flows from operating activities	721	1,260	752
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	16	8	0
Other, net	10	18	14
Net cash flows from investing activities	(1,012)	(638)	(558)
Net cash flows from financing activities:
Proceeds from long-term debt	947	0	0
Repayments of long-term debt	(670)	(283)	(612)
Redemption of preferred securities of subsidiary	(28)	0	0
Net change in note payable to affiliate	(111)	15	217
Other, net	(7)	(1)	(1)
Net cash flows from financing activities	131	(269)	(396)
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