Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 2,493	$ 1,793
Adjustments to reconcile net income to net cash flows from operating activities:
Gains (losses) on marketable securities, net	(848)	(610)
Depreciation and amortization	1,874	1,557
Allowance for equity funds	(56)	(72)
Equity (income) loss, net of distributions	313	64
Changes in regulatory assets and liabilities	(199)	(7)
Deferred income taxes and amortization of investment tax credits	613	288
Other, net	(26)	18
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(254)	(783)
Derivative collateral, net	92	16
Pension and other postretirement benefit plans	(33)	(45)
Accrued property, income and other taxes, net	76	(605)
Accounts payable and other liabilities	187	240
Net cash flows from operating activities	4,232	1,854
Cash flows from investing activities:
Capital expenditures	(2,848)	(2,793)
Purchases of marketable securities	(185)	(272)
Proceeds from sales of marketable securities	163	256
Equity method investments	(52)	(1,087)
Other, net	(53)	58
Net cash flows from investing activities	(2,975)	(3,838)
Cash flows from financing activities:
Proceeds from BHE senior debt	0	3,231
Repayments of BHE senior debt	(450)	(350)
Preferred dividends	(75)	0
Common stock purchases	0	(126)
Proceeds from subsidiary debt	539	2,448
Repayments of subsidiary debt	(1,210)	(1,410)
Net proceeds from (repayments of) short-term debt	245	(920)
Purchase of noncontrolling interest	0	(33)
Distributions to noncontrolling interests	(234)	(8)
Contributions from noncontrolling interests	9	5
Other, net	(28)	(39)
Net cash flows from financing activities	(1,204)	2,798
Effect of exchange rate changes	2	(12)
Net change in cash and cash equivalents and restricted cash and cash equivalents	55	802
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	$ 1,500	$ 2,070