Consolidated Statements of Cash Flows - SPPC - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Net Income (Loss) Attributable to Parent	$ 2,286	$ 2,198
Allowance for equity funds	(75)	(59)
Changes in regulatory assets and liabilities	263	17
Deferred income taxes and amortization of investment tax credits	(116)	573
Trade receivables and other assets	(192)	(82)
Accrued property, income and other taxes, net	190	390
Accounts payable and other liabilities	168	170
Net cash flows from operating activities	5,031	5,134
Capital expenditures	(4,203)	(3,179)
Net cash flows from investing activities	(4,517)	(4,354)
Repayments of BHE senior debt and junior subordinated debentures	(650)	(1,344)
Net cash flows from financing activities	(392)	(330)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	119	456
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,283	1,003
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,402	1,459
Sierra Pacific Power Company [Member]
Net Income (Loss) Attributable to Parent	76	85
Depreciation and amortization	89	85
Allowance for equity funds	(3)	(2)
Changes in regulatory assets and liabilities	32	9
Deferred income taxes and amortization of investment tax credits	9	46
Deferred Energy Change	26	(23)
Amortization of Deferred Charges	(6)	(43)
Trade receivables and other assets	(3)	11
Increase (Decrease) in Inventories	5	2
Accrued property, income and other taxes, net	(2)	(2)
Accounts payable and other liabilities	(5)	(54)
Net cash flows from operating activities	208	110
Capital expenditures	(139)	(131)
Net cash flows from investing activities	(139)	(131)
Repayments of BHE senior debt and junior subordinated debentures	(2)	(1)
Payments of Ordinary Dividends, Common Stock	0	(5)
Net cash flows from financing activities	(2)	(6)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	67	(27)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	8	60
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 75	$ 33

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