Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 473us-gaap_ProfitLoss	$ 507us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	587	482
Allowance for equity funds	(31)	(27)
Changes in regulatory assets and liabilities	152	(27)
Deferred income taxes and amortization of investment tax credits	206	150
Other, net	(35)us-gaap_OtherNoncashIncomeExpense	33us-gaap_OtherNoncashIncomeExpense
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(18)	(16)
Derivative collateral, net	(21)	(21)
Pension and other postretirement benefit plans	(4)	(9)
Accrued property, income and other taxes	(99)	(52)
Accounts payable and other liabilities	(103)	6
Net cash flows from operating activities	1,107	1,026
Cash flows from investing activities:
Capital expenditures	(1,426)	(1,183)
Acquisitions, net of cash acquired	(59)	0
Decrease in restricted cash and investments	12	219
Purchases of available-for-sale securities	(68)	(84)
Proceeds from sales of available-for-sale securities	57	59
Equity method investments	(12)	(4)
Other, net	41	4
Net cash flows from investing activities	(1,455)	(989)
Cash flows from financing activities:
Repayments of BHE senior debt	0	(250)
Common stock purchases	(36)	0
Proceeds from subsidiary debt	484	425
Repayments of subsidiary debt	(353)us-gaap_RepaymentsOfOtherLongTermDebt	(50)us-gaap_RepaymentsOfOtherLongTermDebt
Net proceeds from (repayments of) short-term debt	163	(22)
Other, net	(19)	(22)
Net cash flows from financing activities	239	81
Effect of exchange rate changes	(1)	(1)
Net change in cash and cash equivalents	(110)	117
Cash and cash equivalents at beginning of period	617	1,175
Cash and cash equivalents at end of period	$ 507	$ 1,292

The increase (decrease) during the reporting period in cash placed with or received from a broker or counterparty.

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The cash outflow from the repayment of senior and subordinated long-term debt.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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Amount of deferred income tax expense (benefit) and income tax credits.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.

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The increase (decrease) during the reporting period in the aggregate amount of obligations incurred but not paid and other operating obligations not separately disclosed in the statement of cash flows.

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No definition available.

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The increase (decrease) during the reporting period in the total amount of receivables from all parties and other operating assets not separately disclosed in the statement of cash flows.

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The increase (decrease) during the reporting period of all taxes owed but not paid, including income, property and other taxes.

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The increase (decrease) during the reporting period in the capitalized cost of equity (based on assumed rate of return) and / or borrowed funds (based on interest rate) used to finance construction of regulated assets, which is expected to be recovered through rate adjustments. As a result of this capitalization, net income is increased. This element pertains to certain regulated industries, such as public utilities.

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The increase (decrease) during the reporting period in the amount due to fund pension and non-pension benefits to employees, retired and disabled former employees.

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The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined.

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The net cash inflow or outflow during the period for the aggregate increase (decrease) associated with funds and investments that are not available for withdrawal or use (such as assets held in escrow or contractually limited as to use or disposition) and are associated with underlying transactions that are classified as investing activities.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Other income (expense) included in net income that results in no cash inflows or outflows in the period. Includes noncash adjustments to reconcile net income (loss) to cash provided by (used in) operating activities that are not separately disclosed.

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The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow to reacquire common stock during the period.

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The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from other long-term borrowings not otherwise defined in the taxonomy (with maturities initially due beyond one year or the normal operating cycle of the entity, if longer).

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The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The cash outflow attributable to repayments of borrowings not otherwise defined in the taxonomy (with maturities initially due after one year or beyond the operating cycle if longer).

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