Consolidated Statements of Cash Flows (LLC) - MidAmerican Funding, LLC and Subsidiaries [Domain] - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 228	$ 185
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	199	170
Deferred income taxes and amortization of investment tax credits	4	16
Changes in other assets and liabilities	24	22
Other, net	(9)	(27)
Changes in other operating assets and liabilities:
Receivables, net	42	(1)
Inventories	4	50
Derivative collateral, net	35	(47)
Pension and other postretirement benefit plans	(4)	(1)
Accounts payable	(103)	(22)
Taxes accrued, net	310	33
Other current assets and liabilities	16	18
Net cash flows from operating activities	746	396
Cash flows from investing activities:
Utility construction expenditures	(428)	(432)
Purchases of available-for-sale securities	(61)	(47)
Proceeds from sales of available-for-sale securities	56	44
Proceeds from sales of investments	13	0
Other, net	3	6
Net cash flows from investing activities	(417)	(429)
Cash flows from financing activities:
Proceeds from long-term debt	0	847
Repayments of long-term debt	0	(356)
Net change in note payable to affiliate	(6)	2
Net proceeds from (repayments of) short-term debt	(50)	0
Other, net	0	(7)
Net cash flows from financing activities	(56)	486
Net change in cash and cash equivalents	273	453
Cash and cash equivalents at beginning of period	30	194
Cash and cash equivalents at end of period	$ 303	$ 647