Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 1,717	$ 1,302
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	1,511	1,166
Allowance for equity funds	(75)	(55)
Deferred income taxes and amortization of investment tax credits	1,063	650
Other, net	(20)	(25)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(74)	134
Derivative collateral, net	(30)	49
Pension and other postretirement benefit plans	(23)	(45)
Accrued property, income and other taxes	201	407
Accounts payable and other liabilities	70	100
Net cash flows from operating activities	4,340	3,683
Cash flows from investing activities:
Capital expenditures	(4,060)	(2,885)
Acquisitions, net of cash acquired	(246)	(210)
Decrease (increase) in restricted cash and investments	184	(464)
Purchases of available-for-sale securities	(131)	(128)
Proceeds from sales of available-for-sale securities	101	114
Equity method investments	(22)	(58)
Other, net	(6)	10
Net cash flows from investing activities	(4,180)	(3,621)
Cash flows from financing activities:
Repayments of BHE senior debt and junior subordinated debentures	(550)	0
Proceeds from subsidiary debt	1,272	2,496
Repayments of subsidiary debt	(884)	(437)
Net proceeds from (repayments of) short-term debt	367	(919)
Other, net	(57)	(93)
Net cash flows from financing activities	148	1,047
Effect of exchange rate changes	(2)	(3)
Net change in cash and cash equivalents	306	1,106
Cash and cash equivalents at beginning of period	1,175	776
Cash and cash equivalents at end of period	$ 1,481	$ 1,882