Statements of Cash Flows - MEC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Net Income (Loss) Attributable to Parent	$ 2,443	$ 2,286
Allowance for equity funds	(126)	(75)
Deferred income taxes and amortization of investment tax credits	(92)	(116)
Other Noncash Income (Expense)	44	40
Increase (Decrease) in Accounts Receivable and Other Operating Assets	594	192
Derivative collateral, net	(19)	9
Pension and other postretirement benefit plans	(40)	(61)
Accrued property, income and other taxes, net	195	190
Accounts payable and other liabilities	109	168
Net cash flows from operating activities	4,660	5,031
Capital expenditures	(4,898)	(4,203)
Purchases of marketable securities	242	287
Proceeds from sales of marketable securities	223	266
Other, net	54	48
Net cash flows from investing activities	(6,035)	(4,517)
Net proceeds from (repayments of) short-term debt	594	(2,694)
Other, net	(42)	(32)
Net cash flows from financing activities	1,901	(392)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	523	119
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	883	1,283
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	1,406	1,402
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	631	695
Depreciation and amortization	540	499
Amortization of Utility Plant to Other Operating Expense	25	26
Allowance for equity funds	(59)	(39)
Deferred income taxes and amortization of investment tax credits	31	(35)
Other Noncash Income (Expense)	16	13
Increase (Decrease) in Accounts Receivable and Other Operating Assets	1	46
Increase (Decrease) in Inventories	3	40
Pension and other postretirement benefit plans	(9)	(10)
Accrued property, income and other taxes, net	(28)	(77)
Accounts payable and other liabilities	62	(38)
Net cash flows from operating activities	1,211	1,028
Capital expenditures	(1,909)	(1,466)
Purchases of marketable securities	139	224
Proceeds from sales of marketable securities	126	198
Other, net	19	29
Net cash flows from investing activities	(1,903)	(1,463)
Proceeds from Issuance of Long-term Debt	1,460	687
Repayments of BHE senior debt and junior subordinated debentures	(500)	(350)
Net proceeds from (repayments of) short-term debt	(240)	0
Other, net	0	(1)
Net cash flows from financing activities	720	336
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	28	(99)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	56	282
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 84	$ 183