Consolidated Statements of Cash Flows - NPC - 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)
Changes in regulatory assets and liabilities	(7)	1
Deferred income taxes and amortization of investment tax credits	288	25
Other Noncash Income (Expense)	18	23
Trade receivables and other assets	(783)	(550)
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)
Payments for (Proceeds from) Other Investing Activities	(58)	(36)
Net cash flows from investing activities	(3,838)	(2,959)
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
Nevada Power Company [Member]
Net Income (Loss) Attributable to Parent	79	75
Depreciation and amortization	181	178
Allowance for equity funds	(4)	(2)
Changes in regulatory assets and liabilities	1	3
Deferred income taxes and amortization of investment tax credits	(7)	(9)
Deferred Energy Change	15	13
Amortization of Deferred Charges	(11)	12
Other Noncash Income (Expense)	6	(6)
Trade receivables and other assets	(80)	(47)
Increase (Decrease) in Inventories	2	(3)
Accrued property, income and other taxes, net	28	21
Accounts payable and other liabilities	(3)	30
Net cash flows from operating activities	207	265
Capital expenditures	(257)	(191)
Payments for (Proceeds from) Other Investing Activities	0	(2)
Net cash flows from investing activities	(257)	(189)
Proceeds from Issuance of Long-term Debt	718	495
Repayments of BHE senior debt and junior subordinated debentures	(575)	(500)
Payments of Ordinary Dividends, Common Stock	(85)	(95)
Other, net	(8)	(7)
Net cash flows from financing activities	50	(107)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	0	(31)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	25	121
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 25	$ 90