Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 4,518	$ 4,639
Adjustments to reconcile net income to net cash flows from operating activities:
Gains (losses) on marketable securities, net	(1,142)	(2,407)
Depreciation and amortization	2,834	2,357
Allowance for equity funds	(90)	(122)
Equity (income) loss, net of distributions	346	146
Changes in regulatory assets and liabilities	(518)	(87)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Derivative collateral, net	115	53
Pension and other postretirement benefit plans	(37)	(69)
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Acquisitions, net of cash acquired	(64)	0
Purchases of marketable securities	(243)	(322)
Proceeds from sales of marketable securities	222	308
Proceeds from other investments	1,296	13
Equity method investments	(54)	(2,062)
Other, net	(91)	37
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Preferred stock redemptions	(1,450)	0
Preferred dividends	(86)	0
Common stock purchases	0	(126)
Proceeds from BHE senior debt	0	3,231
Repayments of BHE senior debt	(450)	(350)
Proceeds from subsidiary debt	2,014	2,648
Repayments of subsidiary debt	(1,271)	(1,558)
Net repayments of short-term debt	(316)	(815)
Purchase of noncontrolling interest	0	(33)
Distributions to noncontrolling interests	(366)	(13)
Contributions from noncontrolling interests	9	5
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Effect of exchange rate changes	1	4
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	$ 2,942	$ 2,096