Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 625	$ 518
Adjustments to reconcile net income to net cash flows from operating activities:
Losses on marketable securities, net	(68)	(209)
Depreciation and amortization	733	716
Allowance for equity funds	(32)	(21)
Equity loss (income), net of distributions	26	(5)
Changes in regulatory assets and liabilities	(52)	94
Deferred income taxes and amortization of investment tax credits	(21)	(166)
Other, net	1	19
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	144	250
Derivative collateral, net	(3)	(14)
Pension and other postretirement benefit plans	(21)	(21)
Accrued property, income and other taxes, net	(48)	(60)
Accounts payable and other liabilities	68	(40)
Net cash flows from operating activities	1,488	1,479
Cash flows from investing activities:
Capital expenditures	(1,393)	(1,075)
Acquisitions, net of cash acquired	(26)	0
Purchases of marketable securities	159	155
Proceeds from sales of marketable securities	153	132
Equity method investments	(7)	(156)
Other, net	17	31
Net cash flows from investing activities	(1,415)	(1,223)
Cash flows from financing activities:
Proceeds from BHE senior debt	0	2,176
Common stock purchases	(293)	(90)
Proceeds from subsidiary debt	2,945	687
Repayments of subsidiary debt	(1,420)	(550)
Net repayments of short-term debt	(311)	(1,873)
Other, net	(21)	(14)
Net cash flows from financing activities	900	336
Effect of exchange rate changes	1	1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	974	593
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 1,857	$ 1,876