Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 110	$ 673
Adjustments to reconcile net income to net cash flows from operating activities:
Gains (losses) on marketable securities, net	1,118	(27)
Depreciation and amortization	927	821
Allowance for equity funds	(26)	(34)
Equity income, net of distributions	221	29
Changes in regulatory assets and liabilities	(9)	0
Deferred income taxes and amortization of investment tax credits	(135)	47
Other, net	9	63
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(249)	(118)
Derivative collateral, net	14	(19)
Pension and other postretirement benefit plans	(21)	(23)
Accrued property, income and other taxes, net	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Cash flows from investing activities:
Capital expenditures	(1,295)	(1,356)
Purchases of marketable securities	(128)	(188)
Proceeds from sales of marketable securities	104	180
Equity method investments	(26)	(153)
Other, net	(29)	43
Net cash flows from investing activities	(1,374)	(1,474)
Cash flows from financing activities:
Proceeds from BHE senior debt	0	3,231
Repayments of Unsecured Debt	(450)	(350)
Common stock purchases	0	(126)
Proceeds from subsidiary debt	0	1,093
Repayments of subsidiary debt	(26)	(1,347)
Net proceeds from (repayments of) short-term debt	409	(1,109)
Distributions to noncontrolling interests	(115)	(2)
Other, net	(9)	(32)
Net cash flows from financing activities	(191)	1,358
Effect of exchange rate changes	1	(13)
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
PacifiCorp [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(13)	(21)
Changes in regulatory assets and liabilities	(4)	(16)
Deferred income taxes and amortization of investment tax credits	13	(30)
Other, net	(2)	6
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	61	85
Derivative collateral, net	7	(1)
Accrued property, income and other taxes, net	12	18
Accounts payable and other liabilities	(51)	(3)
Net cash flows from operating activities	469	437
Cash flows from investing activities:
Capital expenditures	(439)	(366)
Other, net	(1)	27
Net cash flows from investing activities	(440)	(339)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	2	(74)
Other, net	(1)	0
Net cash flows from financing activities	1	(74)
Net change in cash and cash equivalents and restricted cash and cash equivalents	30	24
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	19	36
Cash and cash equivalents and restricted cash and cash equivalents at end of period	49	60
MidAmerican Funding, LLC and Subsidiaries [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(6)	(8)
Deferred income taxes and amortization of investment tax credits	153	93
Other, net	(3)	15
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(298)	16
Derivative collateral, net	(14)	1
Pension and other postretirement benefit plans	1	(6)
Accrued property, income and other taxes, net	(332)	(290)
Accounts payable and other liabilities	6	66
Net cash flows from operating activities	(92)	214
Cash flows from investing activities:
Capital expenditures	(298)	(472)
Purchases of marketable securities	(52)	(127)
Proceeds from sales of marketable securities	47	124
Other, net	0	6
Net cash flows from investing activities	(303)	(469)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	387	50
Other, net	0	(1)
Net cash flows from financing activities	394	52
Net change in cash and cash equivalents and restricted cash and cash equivalents	(1)	(203)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	46	331
Cash and cash equivalents and restricted cash and cash equivalents at end of period	45	128
Nevada Power Company [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(1)	(2)
Changes in regulatory assets and liabilities	(15)	3
Deferred income taxes and amortization of investment tax credits	(10)	(4)
Other, net	(1)	8
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	41	32
Accrued property, income and other taxes, net	3	(6)
Accounts payable and other liabilities	14	(41)
Net cash flows from operating activities	179	79
Cash flows from investing activities:
Capital expenditures	(106)	(111)
Net cash flows from investing activities	(106)	(111)
Cash flows from financing activities:
Other, net	(5)	(4)
Net cash flows from financing activities	(5)	140
Net change in cash and cash equivalents and restricted cash and cash equivalents	68	108
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	36	25
Cash and cash equivalents and restricted cash and cash equivalents at end of period	104	133
Sierra Pacific Power Company [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(1)	(1)
Changes in regulatory assets and liabilities	(13)	(10)
Deferred income taxes and amortization of investment tax credits	4	(3)
Other, net	0	1
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	8	1
Accrued property, income and other taxes, net	(3)	4
Accounts payable and other liabilities	1	(12)
Net cash flows from operating activities	42	54
Cash flows from investing activities:
Capital expenditures	(61)	(52)
Net cash flows from investing activities	(61)	(52)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	10	0
Other, net	(2)	(1)
Net cash flows from financing activities	8	(1)
Net change in cash and cash equivalents and restricted cash and cash equivalents	(11)	1
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	26	32
Cash and cash equivalents and restricted cash and cash equivalents at end of period	15	33
Eastern Energy Gas Holdings, LLC [Member]
Cash flows from operating activities:
Net income	191	202
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	80	93
Allowance for equity funds	(2)	(5)
Equity income, net of distributions	(5)	(1)
Changes in regulatory assets and liabilities	6	7
Deferred income taxes and amortization of investment tax credits	30	15
Other, net	0	(1)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(56)	357
Derivative collateral, net	2	9
Pension and other postretirement benefit plans	0	(18)
Accrued property, income and other taxes, net	(25)	(17)
Accounts payable and other liabilities	20	26
Net cash flows from operating activities	241	667
Cash flows from investing activities:
Capital expenditures	(55)	(76)
Other, net	(1)	(4)
Net cash flows from investing activities	(56)	(342)
Cash flows from financing activities:
Net cash flows from financing activities	(118)	(306)
Net change in cash and cash equivalents and restricted cash and cash equivalents	67	19
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	48	39
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 115	$ 58