Consolidated Statements of Cash Flows (LLC) (MidAmerican Funding, LLC and Subsidiaries [Domain], USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
MidAmerican Funding, LLC and Subsidiaries [Domain]
Cash flows from operating activities:
Net income	$ 114	$ 131
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	169	171
Deferred income taxes and amortization of investment tax credits	62	43
Changes in other assets and liabilities	15	16
Other, net	(5)	(2)
Changes in other operating assets and liabilities:
Receivables, net	40	57
Inventories	12	30
Derivative collateral, net	(5)	16
Contributions to pension and other postretirement benefit plans, net	(44)	5
Accounts payable	(49)	(41)
Taxes accrued	(3)	11
Other current assets and liabilities	10	9
Net cash flows from operating activities	316	446
Cash flows from investing activities:
Utility construction expenditures	(219)	(127)
Purchases of available-for-sale securities	(48)	(45)
Proceeds from sales of available-for-sale securities	47	41
Other, net	6	2
Net cash flows from investing activities	(214)	(129)
Cash flows from financing activities:
Dividends	(1)	(1)
Repayment of long-term debt	(200)	0
Repurchase of preferred securities of subsidiary	0	(3)
Net change in note payable to affiliate	213	(241)
Net proceeds from short-term debt	0	2
Net cash flows from financing activities	12	(243)
Net change in cash and cash equivalents	114	74
Cash and cash equivalents at beginning of period	203	88
Cash and cash equivalents at end of period	$ 317	$ 162