Statements of Cash Flows - MEC - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Net Income (Loss) Attributable to Parent	$ 1,786	$ 1,306
Allowance for equity funds	(72)	(70)
Deferred income taxes and amortization of investment tax credits	288	25
Other Noncash Income (Expense)	18	23
Trade receivables and other assets	(783)	(550)
Derivative collateral, net	16	(30)
Pension and other postretirement benefit plans	(45)	(41)
Accrued property, income and other taxes, net	(605)	(140)
Accounts payable and other liabilities	240	32
Net cash flows from operating activities	1,854	2,134
Capital expenditures	(2,793)	(2,750)
Purchases of marketable securities	(272)	(190)
Proceeds from sales of marketable securities	256	185
Other, net	58	36
Net cash flows from investing activities	(3,838)	(2,959)
Net (repayments of) proceeds from short-term debt	(920)	64
Other, net	(42)	(25)
Net cash flows from financing activities	2,798	1,447
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	802	623
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	1,268	883
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	2,070	1,506
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	360	349
Depreciation and amortization	351	356
Amortization of Utility Plant to Other Operating Expense	17	17
Allowance for equity funds	(17)	(32)
Deferred income taxes and amortization of investment tax credits	131	52
Other Noncash Income (Expense)	(17)	6
Trade receivables and other assets	(1)	(2)
Increase (Decrease) in Inventories	(31)	20
Pension and other postretirement benefit plans	(11)	(6)
Accrued property, income and other taxes, net	(409)	(263)
Accounts payable and other liabilities	(47)	(34)
Net cash flows from operating activities	326	463
Capital expenditures	(824)	(1,017)
Purchases of marketable securities	(210)	(99)
Proceeds from sales of marketable securities	202	95
Other, net	14	13
Net cash flows from investing activities	(818)	(1,008)
Proceeds from Issuance of Long-term Debt	0	1,460
Repayments of BHE senior debt and junior subordinated debentures	0	(500)
Net (repayments of) proceeds from short-term debt	195	(240)
Other, net	(1)	0
Net cash flows from financing activities	194	720
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	(298)	175
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	330	56
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 32	$ 231