No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The aggregate amount of payments due after the third year after the balance sheet date to reduce an unrecorded unconditional purchase obligation. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible international losses under enacted tax laws. No authoritative reference available. The amount of pension, postemployment, and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss on assets, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period shall be the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost shall be accrued during the employee's service period). No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The aggregate interest expense incurred on all borrowings, net of capitalized interest and allowance for borrowed funds used during construction. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents corporate function costs that were directly charged or allocated to a subsidiary based on a total percentage of expected use during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. Aggregate number of common shares reserved for the shareholder investment plan. No authoritative reference available. This element represents the total of credit facilities excluding a commodity-linked credit facility due to its contingent nature. No authoritative reference available. This element represents the after-tax loss on the sale of a majority of our international commodities operation, the reclassification of losses on previously designated cash-flow hedges from Accumulated Other Comprehensive Income, and earnings that are no longer part of our core business. No authoritative reference available. No authoritative reference available. No authoritative reference available. The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer. No authoritative reference available. The aggregate of current and noncurrent derivative instruments that are measured at fair value on a recurring basis, and are classified on the balance sheet as derivative assets. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the clean up costs related to deferred environmental costs that were applied for and received by the reporting entity. No authoritative reference available. Pre-tax gain or loss adjustment to accumulated other comprehensive income or loss resulting from funded status adjustments to the entity's defined benefit pension and/or other postretirement plans. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis and the basis in accordance with generally accepted accounting principles of qualified nuclear decommissioning trust funds which will increase future taxable income when such basis difference reverses. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the schedule of future minimum rentals to be received for subleased time charters. No authoritative reference available. The amount which the entity is required to pay for a supplemental environmental project under a consent decree. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Value of new stock during the period and equity impact of any share-based compensation plan. No authoritative reference available. Represents schedule of accumulated amortization of net liability of energy contracts recorded in consolidated balance sheet. No authoritative reference available. The interest rate that is used to adjust other postemployment benefits for the time value of money for the plan. No authoritative reference available. No authoritative reference available. No authoritative reference available. The excess of the accumulated benefit obligation over the fair value of plan assets. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This item represents the gross unrealized losses for securities which are categorized neither as held-to-maturity nor trading securities. Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. Recognized in earnings is all or a portion of the unrealized holding loss, during the period of the hedge, of an Available-for-sale Security that is designated as being hedged in a fair value hedge, other than temporary declines in fair value below cost basis of equity securities, and debt securities which an other than temporary decline in fair value is due to credit losses or which the entity intends to sell or it is more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis. No authoritative reference available. Aggregate amount of intangible asset (liability) amortization recognized as expense during the period related to energy contracts, year three. No authoritative reference available. The gains and losses included in results of operations resulting from the sale of working interests in oil and gas producing wells to a related party, attributable to noncontrolling interests. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the credit related to the Maryland settltment agreement, pre-tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to capture the disclosure of amortization periods for the basis difference in assets of an equity method investment. No authoritative reference available. Schedule of the cost of a related party's purchased energy from nonregulated subsidiaries of the reporting entity to meet its standard offer service obligation. No authoritative reference available. This element represents the number of upstream gas properties where estimated future cash flows are less than the post-impairment carrying value. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the portion of regulatory asset that represents income taxes recoverable through future rates that do not earn a regular rate of return. No authoritative reference available. Disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of all of the fair values of the purchase price and assets and liabilities acquired in a business combination. No authoritative reference available. This element represents the term over which the deferred environmental costs that were incurred from July 2000 through November 2005 are to be amortized, in years. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of preferred stock issued to coventurer. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The cash inflow from EDF in conjunction with the Investment Agreement No authoritative reference available. This item represents the carrying value of assets contributed to a joint venture by co-venturer. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount of aggregate amortization of the basis of difference in investment in affiliate as of the balance sheet date. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. A schedule of gains and losses recorded in earnings and related to hedge ineffectiveness. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents total unrealized gains or losses for the period, arising from net assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the schedule of accounting methods used for investments of the entity in joint ventures, qualifying facilities, power projects and a former subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. The percentage of undivided ownership interest in the Conemaugh coal-fired power plant. No authoritative reference available. The total amount of insurance for public liability available from all sources. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of the entity's maximum exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). No authoritative reference available. The percentage rate used to calculate dividend payments on preferred stock. No authoritative reference available. For classified balance sheets this represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans, other postretirement defined benefit plans and other postemployment benefits (i.e. benefits for disabled and their dependents). No authoritative reference available. This element represents the after-tax charge that is related to the write-down of emission allowance inventory. No authoritative reference available. This element represents the credit related to the Maryland settlement agreement, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the estimated useful lives of assets other than electric generating, transmission and distribution, gas distribution facilities and oil and gas exploitation and production activities. These assets are depreciated primarily using the straight-line method. No authoritative reference available. Represents schedule of amortization expenses related to amortizable intangible assets. No authoritative reference available. Disclosure of the descriptions and amounts of material transactions, such as impairment charges, disposals of business, workforce reduction costs, and certain regulatory matters. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The undrawn portion of credit facilities (maximum borrowing capacity less letters of credit issued and cash drawn). No authoritative reference available. This element represents the charge (benefit) related to a merger termination and our pursuit of other strategic alternatives and any related reallocations and adjustments, net of tax. No authoritative reference available. This element represents the required equity ratio after dividend payments, as calculated pursuant to the Maryland PSC's ratemaking precedents, minimum. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of upstream gas properties where estimated future cash flows are less than the carrying value. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The net cash severance liability. No authoritative reference available. This element represents the average annual group straight-line rate of depreciation for assets used in our regulated business. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The high end of the range of the term of time charter purchase agreements, accounted for as leases. No authoritative reference available. No authoritative reference available. No authoritative reference available. Transactions that result in no cash inflows or outflows in the period in which they occur, but affect net income and thus are removed when calculating net cash flow from operating activities using the indirect method combined with the net change during the reporting period in the value of other assets or liabilities used in operating activities that are not otherwise defined in the taxonomy. This element is used when there is not a more specific and appropriate element. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of transactions that are related to origination gains associated with derivative instruments. No authoritative reference available. This element represents the total number of operating domestic energy projects, consisting of electric generation, fuel processing, or fuel handling facilities, that the reporting entity holds up to a 50% voting interest. No authoritative reference available. This element represents other costs, such as write-offs of advances, lease terminations, and write-downs of long-lived assets. No authoritative reference available. This element represents the other adjustments made in asset retirement obligation. No authoritative reference available. The amount of ongoing cash flows related to certain out-of-the-money acquired contracts that are derivatives and contain a financing element. As a result, the cash flows from these contracts are reclassified from cash provided by (used in) operating activities to cash provided by (used in) financing activities. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents various types of regulated and nonregulated activities performed by the entity and the related component of accrual fuel and purchased energy expense. No authoritative reference available. No authoritative reference available. No authoritative reference available. Total letters of credit issued against the credit facilities' maximum borrowing capacity. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Maximum borrowing capacity under the original agreement of credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents working interests in oil and natural gas wells sold to a related party, number. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents an impairment charge related to the nuclear decommissioning trust fund assets, pre-tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element may be used to capture the entire disclosure for an employer that sponsors one or more defined benefit pension plans or one or more other defined benefit postretirement plans, of certain information, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. Also includes description containing the entire postemployment benefits disclosure which may include supplemental unemployment benefits, obligations recognized for all types of benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement. Disclosure may also include discussion that an obligation for postemployment benefits is not accrued in accordance with regulation only because the amount cannot be reasonably estimated. Also includes description of the terms and benefits provided by the employer's defined contribution plans. A defined contribution plan provides benefits in return for services rendered, provides an individual account for each participant, and has terms that specify how contributions to the individual's account are to be determined rather than the amount of benefits the individual is to receive. No authoritative reference available. Represents the net amount of assets and liabilities measured at fair value on a recurring basis. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period. No authoritative reference available. Disclosure of the change in the accumulated postemployment benefit obligation from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. No authoritative reference available. The aggregate of current and noncurrent derivative instruments that are measured at fair value on a recurring basis, and are classified on the balance sheet as derivative liabilities. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of net gain (loss) reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period and earnings that are no longer part of our core business, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Sum of the carrying amount of all investments and other assets that are expected to be realized or consumed after one year (or the normal operating cycle, if longer), excluding property, plant & equipment. No authoritative reference available. No authoritative reference available. No authoritative reference available. Schedule of information about assets and liabilities that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet or bill certain costs in advance, also included in rate-setting, resulting in a regulatory liability. No authoritative reference available. This element represents the rate cap imposed on a public utility subsidiary of the reporting entity. No authoritative reference available. This element may be used to capture the entire details of taxes other than income taxes included in revenues. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount of debt to be repaid or converted prior to the stated maturity date (early retirement date). No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount that a subsidiary invested in (borrowed from) the cash pool of the parent company under a Master Demand Note agreement, whereby subsidiaries may invest in or borrow from the pool at market interest rates. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the per unit value of performance-based units for which the fair value of the award is remeasured at each reporting period. No authoritative reference available. This element represents the charge for a regulated subsidiary customer rate credit, net of tax. No authoritative reference available. This element represents fair value of common shares issued and delivered in connection with termination of merger agreement. No authoritative reference available. No authoritative reference available. No authoritative reference available. Total investment in Constellation Energy Nuclear Group, LLC. No authoritative reference available. The carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE). No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount of outstanding tax claims for which no tax benefit was recorded on Balance Sheet because refunds were not received and the claims do not meet the "more-likely-than-not" threshold. No authoritative reference available. The after-tax charge for amortization of credit facility amendment fees in connection with the EDF transaction. No authoritative reference available. This element represents the term of a renewable agreement with a related party, in years. No authoritative reference available. For fully vested share options (or share units) and share options expected to vest at the date of the latest statement of financial position, disclosure of the number, weighted-average exercise price (or conversion ratio), aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term for both options (or share units) currently outstanding and options (or share units) exercisable (or convertible). No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Aggregate number of common shares reserved for the employee savings plan. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the maximum rate of cost allocation to the regulated subsidiary until reviewed in the next rate case. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the unvested portion of service-based restricted stock granted from 2007 until 2009 to officers and other employees that is contingently redeemable in cash upon a change in control. No authoritative reference available. This element represents the term of the asset-based lending agreement, in years. No authoritative reference available. Schedule of the components of the liability for the amount due to employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. This schedule also includes cash outflows for payments of severance benefits during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the gain (loss) on the sale of a dry bulk vessel, pre-tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents total unrealized gains or losses for the period, arising from net assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity). No authoritative reference available. Gross receipts taxes and other surcharges and fees imposed on the reporting entity accounted for on a gross basis. Revenues are recognized for these taxes collected from customers along with an offsetting tax expense. No authoritative reference available. The carrying amount of the consolidated Variable Interest Entity's current portion of liabilities included in the reporting entity's statement of financial position. No authoritative reference available. This element represents net cash received from (payment to) the buyer upon completion of the TRS. No authoritative reference available. This element represents the deferred tax liabilities resulting from investment tax credits as of the balance sheet date. No authoritative reference available. This element represents the estimated charge (benefit) related to the class action ash placement complaint and related adjustments, net of tax. No authoritative reference available. The net available liquidity calculated as the available credit facility less drawdowns plus existing cash and the amount available from a put arrangement. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The actual ratio of debt to total capitalization as defined by certain of the entity's credit facilities. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of qualified pension plan contributions made by the employer during the reporting period. No authoritative reference available. This element represents the deferred environmental costs incurred from November 1995 through June 2000. No authoritative reference available. No authoritative reference available. No authoritative reference available. Describes an entity's accounting policy for recognizing and measuring the impairment of assets, including long-lived assets, investments, debt and equity securities, goodwill and intangible assets. No authoritative reference available. The carrying amount (fair value) as of the balance sheet date of cash held as collateral from counterparties. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of each major category of plan assets, at their fair value by level within the fair value hierarchy, as of the measurement date. No authoritative reference available. This element represents power sales contracts assumed from a counterparty with previously existing VIEs, number. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The portion of the total amount of net periodic benefit cost for defined benefit plans that was capitalized during the period. No authoritative reference available. This element represents investments in affiliates before adjustment for amortization of basis difference. No authoritative reference available. No authoritative reference available. No authoritative reference available. Schedule of non-dilutive stock options and dilutive common stock equivalent shares. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the term that residential electric customers have to pay a usage-based, non-bypassable charge securing rate stabilization bonds, in years. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Cash outflows for the investment in securities within the nuclear decommissioning trust fund that are classified as cash flows from investing activities and are reported on a gross basis. No authoritative reference available. No authoritative reference available. No authoritative reference available. The expiration date of non-qualified stock options from the date of grant, in years. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the net asset value of a deconsolidated entity. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of compensatory damages sought by each claimant. No authoritative reference available. The positions eliminated associated with an exit from or disposal of business activities or restructurings pursuant to a plan, number. No authoritative reference available. Schedule of the timing of required repayments, sinking fund requirements, and other redeemable securities at fixed or determinable prices and dates in the five years immediately following the date of the latest balance sheet presented in the financial statements, and the amount thereafter to fully repay the principal of long-term debt. These disclosures may be made either on an individual debt or security basis, by type of debt or security basis, or on a combined basis. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The aggregate amount of letters of credit already posted, at the end of the reporting period, as collateral for out-of-the-money derivative instruments with credit-risk related contingent features. No authoritative reference available. Disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. No authoritative reference available. This element represents the underlying power generation capacity of the entities acquired. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the net liability resulting from the net cash payment on a Total Return Swap and acquiring a matching nonderivative contract. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The aggregate amount of payments due in the second year after the balance sheet date to reduce an unrecorded unconditional purchase obligation. No authoritative reference available. Disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. No authoritative reference available. No authoritative reference available. No authoritative reference available. Schedule of matching contributions made by the employer to participant accounts of defined contribution plans. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents terms of agreements with related parties (in years). No authoritative reference available. This element represents the recovery term of deferred expenses from customers over the specified period, in months. No authoritative reference available. This element represents the percentage of interest in affiliates sold. No authoritative reference available. No authoritative reference available. No authoritative reference available. Percentage of deduction allowed for goodwill under income tax. No authoritative reference available. The number of lawsuits transferred to a different District Court for coordination. No authoritative reference available. No authoritative reference available. No authoritative reference available. Maximum age of retirees as of January 1, 2002 for which contributions for retiree medical coverage are capped at the 2002 level, expressed in years. No authoritative reference available. Includes disclosure of commitments and contingencies. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables. Also provides pertinent information about each guarantee obligation, or each group of similar guarantee obligations, including (a) the nature of the guarantee, including its term, how it arose, and the events or circumstances that would require the guarantor to perform under the guarantee; (b) the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee; (c) the current carrying amount of the liability, if any, for the guarantor's obligations under the guarantee; and (d) the nature of any recourse provisions under the guarantee, and any assets held either as collateral or by third parties, and any relevant related party disclosure. Excludes disclosures about product warranties. No authoritative reference available. Current portion of remaining unamortized balance of non-derivative energy contracts that we acquired or derivatives designated as normal purchases and normal sales previously recorded as "Derivative liabilities." No authoritative reference available. Disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. No authoritative reference available. No authoritative reference available. No authoritative reference available. Schedule of the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. No authoritative reference available. The period of time that represents the maximum original maturity of highly liquid investments for classification as cash equivalents, expressed in months. No authoritative reference available. This element represents the gain (loss) on the sale of a membership interest in a subsidiary. No authoritative reference available. This element represents the payment made to the buyer of a majority of the reporting entity's international commodities operation for contracts assigned to the buyer. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of transactions that are associated with derivative instruments that were terminated or restructured during the period. No authoritative reference available. The carrying amount of the consolidated Variable Interest Entity's noncurrent assets included in the reporting entity's statement of financial position. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the carrying amount of the investment in a joint venture, qualifying facility, power project, LLC or other affiliate. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. A schedule of commodity cash flow hedge gains and losses, pre-tax, reclassified from accumulated other comprehensive income when the hedge became probable of not occurring. No authoritative reference available. Sum of carrying amount of deferred credits and other liabilities that are expected to be repaid beyond the following 12 months or business cycle. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The number of shareholders filing lawsuits in the Circuit Court. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the total number of operating domestic energy projects which are "qualifying facilities" that receive certain exemptions and pricing under the Public Utility Regulatory Policies Act of 1978. No authoritative reference available. No authoritative reference available. No authoritative reference available. The portion of the difference between total income tax expense (benefit) as reported in the Income Statement for the period and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible merger-related transaction costs under enacted tax laws. No authoritative reference available. Gain or loss on entity's disposition of equity in securities of subsidiaries or 50 percent or less owned persons, net of tax. Reflects the difference in the parent company's carrying amount of the equity interest in the subsidiary (or equity method investee) immediately before and after all stock transactions. No authoritative reference available. The net change during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services and amounts related to exchange-traded derivatives, excluding margin. No authoritative reference available. This element represents the total amount accrued for the one-time per customer distribution rate credit of a subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. NonCurrent portion of remaining unamortized balance of non-derivative energy contracts that we acquired or derivatives designated as normal purchases and normal sales previously recorded as "Derivative liabilities." No authoritative reference available. This element represents the aggregate proceeds to be received for having the option to sell certain assets pursuant to a merger agreement. No authoritative reference available. The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation related to interest cost. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. No authoritative reference available. No authoritative reference available. No authoritative reference available. Term to which expected asset gains and losses are ratably applied when determining net periodic pension benefit cost, in years. No authoritative reference available. This element represents the increases and decreases in the carrying amount of the asset retirement obligation during the period. No authoritative reference available. This element represents the aggregate number of credit rating agencies, which rate subsidiary's senior unsecured credit. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. No authoritative reference available. May be used as a block of text to describe the subsequent event policy of the reporting entity. This element represents management's statement as to the date through which it evaluated subsequent events for impacts to the entity's financial statements and whether or not that date is (1) the date the financial statements were issued or (2) the date the financial statements were available to be issued. No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount of amortization of the basis difference in investment in affiliate. The basis difference represents the difference between the fair value of our investment in affiliate less our share of the affiliate's equity because the affiliate's assets and liabilities retained their historical carrying value. No authoritative reference available. This element represents the initial fair value of certain structured transactions that the wholesale marketing, risk management, and trading operation executes to meet the risk management needs of the customers. No authoritative reference available. This element represents other adjustments to accumulated comprehensive income during the period, after tax, not otherwise specified in the taxonomy. No authoritative reference available. The number of variable interest entities consolidated in the reporting entity's consolidated financial statements. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The number of parties, other than the reporting entity and its subsidiaries, who have been involved in legal or environmental actions. No authoritative reference available. No authoritative reference available. No authoritative reference available. The low end of the range of the term of time charter purchase agreements, accounted for as leases. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The penalty assessed under a consent decree. No authoritative reference available. The average term of time charter purchase agreements, accounted for as leases. No authoritative reference available. This element represents the after-tax gain (loss) on the sale of a membership interest in a subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of the initial severance liability that is recorded as pension and post-retirement liabilities. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of increase or decrease in the accumulated benefit obligation related to the defined benefit plan funded status adjustments recorded during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the noncontrolling interest impairment charge. No authoritative reference available. This element represents other comprehensive income related to equity investment in CENG joint venture during the period, net of tax. No authoritative reference available. The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the synthetic fuel tax credit phase-out during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Summary of stock option compensation expense; cash received upon exercise, intrinsic value to employees and realized tax benefits for stock options exercised; and the fair value of options that vested during the period. No authoritative reference available. The number of counterparties exceeding the maximum credit exposure trigger percentage. No authoritative reference available. This element represents the disclosure related to assets and liabilities, including financial instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. No authoritative reference available. Disclosure of unconsolidated variable interest entities (VIE) includes the nature of involvement with the VIE and when that involvement began, the nature of the VIE's financing, and any obligations to provide financial support. No authoritative reference available. No authoritative reference available. No authoritative reference available. Gain or loss on entity's disposition of equity in securities of subsidiaries or 50 percent or less owned persons. Reflects the difference in the parent company's carrying amount of the equity interest in the subsidiary (or equity method investee) immediate, net of tax No authoritative reference available. This element represents the purchase price received for the sale of a membership interest in a subsidiary. No authoritative reference available. The weighted average period over which unrecognized compensation is expected to be recognized for share-based compensation plans, using a decimal to express in number of months. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The adjustment to other comprehensive income for amortization of net actuarial loss, prior service cost and transition obligation recognized as a component of net periodic benefit cost during the period, after tax. No authoritative reference available. Schedule of the expenses recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the after-tax charge for certain long-lived assets that ceased to be used in connection with the divestiture of a majority of our international commodities operation and Houston-based gas trading operation. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the gain (loss) on the sale of certain working interests in an upstream gas property, net of tax. No authoritative reference available. Disclosure of the assumed health care cost trend rates for the next year used to measure the expected cost of benefits covered by the plans, including the ultimate trend rate(s) and when that rate is expected to be achieved. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The unrealized gain (loss) as of the balance sheet date, due to the change in the fair value of interest rate fair value hedging instruments. No authoritative reference available. This element represents the maximum percentage of fixed-price contracts for forecasted system supply requirements required of a public utility subsidiary by the public service commission. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of dry bulk vessels acquired under operating lease. No authoritative reference available. Disclosure of the summary of net available liquidity including credit facilities and usage of credit lines. No authoritative reference available. The amount of settlement charges excluded from net periodic pension benefit costs in the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents the unrealized fair value of exchange traded derivatives, exclusive of cash margin posted. No authoritative reference available. The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase, and the acquisition of other tangible assets not otherwise defined in the taxonomy. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the issuance of trust preferred securities. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Describes an entity's accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. This element may also be used to describe policies related to state and local income taxes and taxes other than income taxes. No authoritative reference available. The maximum retrospective premiums that are payable per nuclear incident per year. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Tax effect of other comprehensive income related to equity investment in CENG joint venture. No authoritative reference available. Carrying value of deferrable interest subordinated debentures related to trust preferred securities as of the balance sheet date. No authoritative reference available. Rental expense incurred for leased assets. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost over the next fiscal year, including the net gain or loss, net prior service cost or credit, and net transition asset or obligation. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the description of the period of time after which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in years. No authoritative reference available. The amount remitted to variable interest entities for rate stabilization bonds. No authoritative reference available. Aggregate amount of amortization expense recognized for indefinite lived intangible asset during the period. No authoritative reference available. This element represents the impairment charge, net of the non-controlling interest. No authoritative reference available. Sum of investments and other assets not individually reported in the financial statements. No authoritative reference available. The expense charges against earnings related to the write-down of emission allowances due to price declines. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the charge that is related to the one-time residential electric customer credit which is associated with the Maryland settlement agreement, before tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the impact of deconsolidation of subsidiary on asset retirement obligation. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the current portion of the unamortized energy contract assets related to CENG joint venture. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents schedule of estimated amortization expense of intangible assets - energy contract. No authoritative reference available. No authoritative reference available. No authoritative reference available. Number of shares of stock issued upon the termination of a merger agreement. No authoritative reference available. Describes an entity's accounting policies for regulated and nonregulated property, plant and equipment and nuclear fuel; depreciation, depletion and amortization expense; and, accretion expense for asset retirement obligations. It may include the basis of such assets, depreciation, depletion and amortization methods used and estimated useful lives; the entity's capitalization policy, including its accounting treatment for costs incurred for repairs and maintenance activities; whether such asset balances include capitalized interest or an allowance for funds used during construction, the methods used to calculate how much is to be capitalized and information as to whether the costs will be recovered in the rates; how disposals of such assets are accounted for and how impairment of such assets is assessed and recognized. This element may also include an entity's accounting policy for legal obligations associated with the disposal or removal of a long-lived asset from service that result from the acquisition, construction, or development or from the normal operation of a long-lived asset. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The net available liquidity calculated as the available credit facility less drawdowns plus existing cash, excluding put arrangement. No authoritative reference available. The net asset (liability) related to the non-derivative energy contracts acquired, certain contracts which no longer qualify as derivatives due to the absence of a liquid market, and derivatives designated as normal purchases and normal sales. No authoritative reference available. The amount by which the income tax expense would decrease if the total amount of unrecognized tax benefits relating to disallowed state tax refund claims subject to appeals were ultimately realized. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents the amount of assets measured at fair value on a recurring basis. No authoritative reference available. Increase in noncontrolling interest balance from contribution by noncontrolling interest. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents cash withdrawn on line of credit facility. No authoritative reference available. Represents the cost of power purchased from an entity in which the reporting entity has an ownership interest. No authoritative reference available. This element represents the impairment charge of a nonregulated subsidiary, net of noncontrolling interest, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the maximum term over which the rate stabilization deferral is to be amortized into earnings, in years. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents management's expectation of payments to be made for income taxes and bond repurchases. No authoritative reference available. The amount of actuarial gains or losses that are related to defined benefit plan obligations. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the quarterly financial data in the annual financial statements as a single block of text. The disclosure includes a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. No authoritative reference available. This element represents the number of natural gas-fired plants sold. No authoritative reference available. No authoritative reference available. No authoritative reference available. Maximum percentage of voting interest held in domestic energy projects. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the cash amount paid for merger termination fees. No authoritative reference available. No authoritative reference available. No authoritative reference available. Aggregate number of common shares reserved for the long-term incentive plans. No authoritative reference available. The number of lawsuits filed in the District Court. No authoritative reference available. The after-tax charge (benefit) for impairment related to nuclear decommissioning trust fund assets and related income tax adjustments. No authoritative reference available. This element represents the reduction in depreciation expense for the period due to the revision of depreciation rates for regulatory and financial purposes. No authoritative reference available. This element represents power contract monetization entities, number. No authoritative reference available. This element represents the estimated amount to be funded per customer for a one-time per customer distribution rate credit of a subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. The number of lawsuits filed. No authoritative reference available. This element represents the net unrealized losses on defined benefit plans, net of taxes during the reporting period. No authoritative reference available. The accumulated amortization related to the non-derivative energy contracts acquired, certain contracts which no longer qualify as derivatives due to the absence of a liquid market, and derivatives designated as normal purchases and normal sales. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the cash proceeds from the sale of membership interest in joint venture. No authoritative reference available. This element represents the gain (loss) on the sale of a dry bulk vessel, net of tax. No authoritative reference available. Describes an entity's accounting policy for tax positions taken in the Company's tax return filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of contingencies related to income taxes. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The after-tax charge for impairment and other costs. No authoritative reference available. The balance consists of interest capitalized during the period for the nonregulated business and the allowance for borrowed funds used during construction in the regulated business during the period, which may be reflected as a reduction of interest expense. No authoritative reference available. The aggregate amount of payments due in the third year after the balance sheet date to reduce an unrecorded unconditional purchase obligation. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the amount of the per customer one-time residential electric customer credit that is related to Maryland settlement agreement. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Equity investment disclosure, or group of investments for which combined disclosure is appropriate, including: (a) the name of each investee and percentage of ownership of common stock, (b) accounting policies for investments in common stock, (c) difference between the amount at which the investment is carried and the amount of underlying equity in net assets and the accounting treatment of the difference, (d) the total fair value of each identified investment for which a market value is available, (e) summarized information as to assets, liabilities, and results of operations of the investees (for investments in unconsolidated subsidiaries, common stock of joint ventures, or other investments using the equity method), and (f) material effects of possible conversions, exercises, or contingent issuances of the investee. Other disclosures include (a) the names of any investee in which the investor owns 20 percent or more of the voting stock and investment is not accounted for using the equity method, and the reasons why not, and (b) the names of any investee in which the investor owns less than 20% of the voting stock and the investment is accounted for using the equity method, and the reasons why it is. This item also represents the entire disclosure related to Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale. Additionally, this disclosure includes variable interest entities (VIE), including, but but not limited to the nature, purpose, size, and activities of the VIE, the carrying amount and classification of consolidated assets that are collateral for the VIE's obligations, lack of recourse if creditors (or beneficial interest holders) of a consolidated VIE have no recourse to the general credit of the primary beneficiary. An enterprise that holds a significant variable interest in a VIE but is not the primary beneficiary may disclose the nature of its involvement with the VIE and when that involvement began, the nature, purpose, size, and activities of the VIE and the enterprise's maximum exposure to loss as a result of its involvement with the VIE. No authoritative reference available. The high end of the range of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year). No authoritative reference available. This element encapsulates the table disclosing assets, liabilities and other information of consolidated variable interest entities. Other information may include ownership, investments and location of VIE on the statement of financial position and the maximum exposure. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the dry bulk vessels owned by a shipping joint venture, number. No authoritative reference available. This element represents the schedule of annual operating lease expense. No authoritative reference available. The amount of the debt guarantee and working capital funds, as of the balance sheet date. No authoritative reference available. No authoritative reference available. No authoritative reference available. Increase/decrease in balance of noncontrolling interest due to consolidation/deconsolidation of a variable interest entity during the period. A modification of contractual arrangements changed the allocation of economic risks and rewards of the variable interest entity among the variable interest holders. No authoritative reference available. Tax effect on the adjustment to other comprehensive income for amortization of net actuarial loss, prior service cost and transition obligation recognized as a component of net periodic benefit cost during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount of state tax credit claims outstanding included in outstanding tax claim benefits. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income. Such unrealized (holding) gains or losses relate to those assets and liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). No authoritative reference available. This element represents the tax benefit that is related to the anticipated finalization of the Maryland settlement agreement. No authoritative reference available. Approximate average annual revenue to be recognized for service agreement with related party. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The gains and losses included in results of operations resulting from the sale of working interests in oil and gas producing wells to a related party, net of the minority interest gains and losses. No authoritative reference available. Total of phased-in investment in joint venture required by the coventurer per the agreement. No authoritative reference available. The total amount of net periodic benefit cost for defined benefit plans for the period, excluding capitalized costs. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments). No authoritative reference available. Schedule of any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. No authoritative reference available. This item represents the amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support. No authoritative reference available. This element represents the amount for settling the conversion of the series A preferred stock. No authoritative reference available. The amount of purchased power from a related party charged against earnings for the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. The interest rate stated in the contractual debt agreement for the senior notes issued in connection with the termination of the MidAmerican merger. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Schedule of direct expenses and allocation of corporate functions to related party during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the maximum borrowing capacity under the current agreement with additional commitments by the lenders after increase. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the pretax earnings that were recognized on the terminated or restructured derivative instruments. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents the effect of legally enforceable master netting agreements against out-of-the-money derivative contracts, excluding cash collateral. No authoritative reference available. The maximum retrospective premiums that can be assessed per nuclear incident. No authoritative reference available. No authoritative reference available. No authoritative reference available. Target allocation percentage of investments to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. No authoritative reference available. Represents the effect of legally enforceable master netting agreements against in-the-money derivative contracts, excluding cash collateral. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Aggregate amount of intangible asset (liability) amortization recognized as expense during the period related to energy contracts, year two. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents an equity contribution made to a subsidiary to fund the after-tax amount of the rate credit as ordered by the state public service commission. No authoritative reference available. This element represents the portion of the merger termination fees that were allocated to BGE. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the schedule of future minimum payments for long-term, noncancelable, operating leases. No authoritative reference available. The amount of the retrospective premium assessment per reactor, per incident required by participation in an industry-wide program for nuclear accidents. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the liquidity available through the put arrangement after regulatory approvals are received, including an additional asset, net of taxes. No authoritative reference available. No authoritative reference available. No authoritative reference available. Describes an entity's accounting policies regarding unamortized non-derivative energy contracts. No authoritative reference available. This element represents the disclosure of the maximum exposure of guarantee obligations. No authoritative reference available. This element represents net loss on divestitures net of tax. No authoritative reference available. This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to net assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3). No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents payment made in lieu of issuance of shares of common stock upon the conversion of preferred stock. No authoritative reference available. No authoritative reference available. No authoritative reference available. The low end of the range of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year). No authoritative reference available. This element represents the charge that is related to the one-time residential electric customer credit which is associated with the Maryland settlement agreement, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Sum of the carrying amounts as of the balance sheet date of common stock, retained earnings, and accumulated other comprehensive income/loss. No authoritative reference available. Gain or loss recorded from sale of oil and gas properties, includes the realized gains (losses) on the sale of proved and unproved oil and gas properties, net of tax. No authoritative reference available. This element represents the number of credit rating agencies, which assign below investment grade rating to subsidiary's senior unsecured credit. No authoritative reference available. The assumed health care cost trend rate for the second year that is used to measure the expected cost of benefits covered by the plan (gross eligible charges). It is based on annual rate of change in the cost of health care benefits currently being provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population, by age and dependency status. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The estimated net exposure for obligations under commercial transactions that the parent company would have to fund based on current market prices. No authoritative reference available. This element represents the portion of the aggregate unrecognized cost of share-based awards made to employees under share-based compensation plans that have yet to vest, that is expected to be recognized in the next year. No authoritative reference available. This element represents the accrual of a residential customer credit. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the impairment charge of certain upstream gas properties, net of tax. No authoritative reference available. Fair value of power purchase agreement with CENG recorded at closing. No authoritative reference available. This item represents certain of the disclosures concerning the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include the fair value of the required items together with their carrying amounts (as appropriate). No authoritative reference available. The expense charged against earnings for the periodic recognition of nuclear fuel costs. No authoritative reference available. Schedule of the details of equity issuances by an equity method investment, including units issued, price per unit, proceeds received and pre-tax gains recognized on the issuances. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Aggregate amount of intangible asset (liability) amortization recognized as expense during the period related to energy contracts, year one. No authoritative reference available. This element represents the transfer of tax-exempt bonds from a subsidiary to the parent company related to the transfer of generating assets from the subsidiary to the parent company. No authoritative reference available. A table that presents the volume of our derivative activities shown by contractual settlement year. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents gain or loss after tax on entity's disposition of equity in securities of subsidiaries or 50 percent or less owned persons. Reflects the difference in the parent company's carrying amount of the equity interest in the subsidiary (or equity method investee) immediately before and after all stock transactions. No authoritative reference available. The ratio of debt to total capitalization which the entity is required to maintain by certain of the entity's credit facilities. No authoritative reference available. This element represents the percentage of global equity securities that are passively invested. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the term, in years, of the suspension of collecting the shareholder return component of the administrative fee for standard offer services to residential customers by a subsidiary. No authoritative reference available. Schedule of summary information for unconsolidated variable interest entities, including, but not limited to total assets, total liabilities, ownership interest, maximum exposure to loss and the carrying amount and location of the variable interest on the balance sheet. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the mark-to-market gains on derivative contracts for the forward sale of emission allowances, pre-tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the descriptions and amounts of material transactions, such as impairment charges, disposals of business, workforce reduction costs, and certain regulatory matters. No authoritative reference available. This element represents the investment that pools funds from many investors to invest in a combination of underlying investments, primarily mutual funds. No authoritative reference available. This element represents the minimum term of the investment horizon for Qualified Pension Plan Assets considered by the Committee. No authoritative reference available. Represents the high end of the range of the required purchases of power from a related party, that is not sold to third parties, over the specified term of a power purchase agreement, percent. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The estimated net fair value exposure for obligations which are covered by guarantees based on current market prices that is recorded on our balance sheet. No authoritative reference available. Represents the authorized rate for the allowance for funds used during construction. This financing cost is capitalized as part of the cost of construction projects. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents power project and fuel supply entities, number. No authoritative reference available. This element represents the percentage below which the reporting entity's ownership interest fell as a result of the investee's issuance of additional equity shares. No authoritative reference available. No authoritative reference available. No authoritative reference available. The aggregate amount disbursed to date to settle environmental loss contingencies. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the potential future liability that a subsidiary's customers are relieved of for decommissioning two electric generation units. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the disclosure related to assets and liabilities, including financial instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). No authoritative reference available. The number of lawsuits where plaintiffs' counsel has filed dismissals without prejudice. No authoritative reference available. The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position. No authoritative reference available. No authoritative reference available. No authoritative reference available. Gross amount, as of the balance sheet date, of the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable), in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. Aggregate amount of intangible asset (liability) amortization recognized as expense during the period related to energy contracts, year five. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the schedule of future obligations relating to commitments in connection with our Generation, NewEnergy, and regulated businesses. No authoritative reference available. The maximum aggregate proceeds, before tax, that can be generated per an asset put arrangement that allows the entity to sell certain non-nuclear generation assets, at pre-agreed prices, to an outside party. No authoritative reference available. Accumulated pre-tax losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges recorded in accumulated other comprehensive income. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the tax effect of the net unrealized gains on nuclear decommissioning trust funds during the reporting period. No authoritative reference available. Detailed information about assets/liabilities that are created when regulatory agencies permit public utilities to defer certain costs/benefits included in rate-setting to the balance sheet, reported on a net basis, as a single block of text. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the partial reversal of the net emission allowance impairment. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents net assets and liabilities measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the percentage of global equity securities that are actively invested. No authoritative reference available. The low end of the range of the required percentage voting interest to be held by the reporting entity to use the equity method of accounting to report investments, corporate joint ventures, partnerships and affiliated companies in its consolidated financial statements. If the reporting entity can exercise control over the operations and policies, accounting rules require consolidation of the investee's financial statements. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The percentage of estimated residential and small commercial electricity requirements which is covered by purchase commitments. No authoritative reference available. Expected revenue to be recognized for service agreement with related party in the next year. No authoritative reference available. The maximum amount of private primary insurance available, which was purchased. No authoritative reference available. This element represents the equity ratio below which the subsidiary is not allowed to pay common dividends to its holding company pursuant to the Maryland PSC's ratemaking precedents. No authoritative reference available. This element represents the amount of the note repurchase commitment the reporting entity made upon the closing of the sale of a partial interest in a subsidiary. No authoritative reference available. Disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. No authoritative reference available. The amount as of the balance sheet date of the estimated future tax effects attributable to CENG relating to the difference between the tax basis and the basis in accordance with generally accepted accounting principles of equity method investments retained at carrying value which will increase future taxable income when such basis difference reverses. No authoritative reference available. Discloses the estimated aggregate amortization expense for each of the five succeeding fiscal years. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the sum of other items after tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. Proceeds from the sale of securities within the nuclear decommissioning trust fund that are classified as cash flows from investing activities and are reported on a gross basis. No authoritative reference available. This item represents the disclosure of summarized financial information for unconsolidated subsidiaries and 50 percent-or-less owned entities accounted for using the equity method of accounting. If investments in common stock of corporate joint ventures or other investments accounted for under the equity method are, in the aggregate, material in relation to the financial position or results of operations of an investor, it may be necessary to present summarized financial information of a material investee, or group of investments for which combined disclosure is appropriate, either by individual financial statement caption or in groups, as appropriate. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of common shares issued and delivered in connection with the termination of a merger agreement. No authoritative reference available. Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the charge to earnings during the period for the remaining unamortized portion of the premium paid as part of executing an agreement that provided an option to sell certain assets for a stated amount. No authoritative reference available. The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position. No authoritative reference available. The maximum aggregate proceeds, after tax, that can be generated per an asset put arrangement that allows the entity to sell certain non-nuclear generation assets, at pre-agreed prices, to an outside party based on regulatory approvals received to date. No authoritative reference available. Schedule that lists the quantified effects on cash flows resulting from the exit plan. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Number of shares of new stock issued during the period and number of shares issued during the period as a result of any share-based compensation plan. No authoritative reference available. Represents upper limit on percentage of certain costs that can be allocated by the entity to its regulated affiliate per terms of transaction with an outside party. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Describes the accounting for AFUDC (for example, component of PPE, credit to income statement), information regarding the inclusion in rates (only capitalized if its inclusion in rates is probable) and description of AFUDC (for example, represents the cost of capital used during construction). No authoritative reference available. This element represents the final amount to be funded per customer for a one-time per customer distribution rate credit of a subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element can be used to disclose the entity's entire derivative instruments and hedging activities disclosure as a single block of text. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising there from, and the amounts of and methodologies and assumptions used in determining the amounts of such items. This item also represents the complete disclosure regarding the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the Company is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risk is are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. No authoritative reference available. This element represents the percentage ownership acquired by an affiliate in coalbed properties. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount of costs related to a merger and our pursuit of other strategic alternatives to the merger that were charged to expense during the period. No authoritative reference available. This element represents the goods that are owned but transferred to another party as per agreement to serve as collateral to partially or fully secure obligation, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party. No authoritative reference available. This represents the current liability recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement and postemployment benefit plans. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The decrease to plan assets resulting from the amount of benefits paid. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its nonpension postretirement benefit plans as well as payments to retirees and disabled employees. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of increase or decrease in the projected benefit obligation related to the defined benefit plan funded status adjustments recorded during the period. No authoritative reference available. The percentage of undivided ownership interest in the Keystone coal-fired power plant. No authoritative reference available. The number of variable interest entities (VIEs) not consolidated. No authoritative reference available. No authoritative reference available. No authoritative reference available. The increase to plan assets resulting from the amount of contributions made by plan participants. No authoritative reference available. The net cash inflow for acquired energy purchase and sale agreements. These agreements had contract prices that differed from market prices at closing, which resulted in cash payments from the counterparty at the acquisition of the agreements. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the reconciliation of beginning and ending balances of the fair value of plan assets of pension plans and/or other employee benefit plans showing separately, if applicable, the effects during the period attributable to each of the following: actual return on plan assets, foreign currency exchange rate changes, contributions by the employer, contributions by plan participants, benefits paid, business combinations, divestitures, and settlements. No authoritative reference available. This element represents the total number of upstream gas properties that are considered for estimation of cash flows. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of defined contribution plans sponsored by the reporting entity. No authoritative reference available. This element represents the rate increase cap imposed on a public utility subsidiary by the public service commission. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. No authoritative reference available. The percentage of ownership interest in a subsidiary that was sold during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component increases the benefit obligation and is unaffected by the funded status of the plan. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the components of net benefit costs for postretirement plans including service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss recognized due to settlements or curtailments. No authoritative reference available. No authoritative reference available. No authoritative reference available. The number of nuclear generating units owned, operated and maintained by a nuclear generation joint venture in which the reporting segment has an interest. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the amortized portion of deferred environmental costs that were incurred prior to October 1995. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include the target allocation of plan assets and the actual allocation of plan assets. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the fair value of the consideration received from EDF. No authoritative reference available. This element represents the reporting entity's percentage of credit risk exposure with a related party. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The major external credit rating agencies, number. No authoritative reference available. This element is used to capture the disclosure of the gain on the sale of an equity method investment, pre-tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The carrying value of other ownership interests as of the balance sheet date. No authoritative reference available. No authoritative reference available. No authoritative reference available. The aggregate amount of cash collateral and letters of credit already posted, at the end of the reporting period, as collateral for out-of-the-money derivative instruments with credit-risk related contingent features. No authoritative reference available. This element represents various types of regulated and nonregulated activities performed by the entity and the related component of accrual revenues. No authoritative reference available. Disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss recognized due to settlements or curtailments. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of proceeds from a terminated interest rate swap designated as a fair value hedge. No authoritative reference available. No authoritative reference available. No authoritative reference available. Aggregate amount of intangible asset (liability) amortization recognized as expense during the period related to energy contracts, year four. No authoritative reference available. Disclosure of the cost and fair value of debt and equity securities, which are categorized neither as held-to-maturity nor trading. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The accumulated impairment losses related to goodwill as of the balance sheet date. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents the gross fair value of out-of-the money derivative contracts containing credit-risk related contingent features that are not fully collateralized by posted cash collateral on an individual, contract-by-contract basis ignoring the effects of master netting arrangements. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the outstanding amount of tax-exempt debt transferred from a subsidiary to its parent company for which the subsidiary remains contingently liable. No authoritative reference available. This element represents the annual nuclear decommissioning charge that the company continues to collect from customers. No authoritative reference available. No authoritative reference available. No authoritative reference available. The cash flow impact of costs related to a merger and our pursuit of other strategic alternatives to the merger. No authoritative reference available. The amount of ongoing cash flows related to certain out-of-the-money acquired contracts that are derivatives and contain other than insignificant financing element. As a result, the cash flows from these contracts are reclassified from cash provided by (used in) operating activities to cash provided by (used in) financing activities. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents other comprehensive income related to other equity investments during the period, net of tax. No authoritative reference available. Description of asset acquisitions and business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. This element may be used as a single block of text to encapsulate the entire disclosure (including data and tables) regarding business combinations, including leverage buyout transactions (as applicable). No authoritative reference available. This element represents, for the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs). No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the noncurrent portion of the unamortized energy contract assets related to CENG joint venture. No authoritative reference available. Purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the per share value of common stock used to determine the payment made in lieu of issuance of shares of common stock upon the conversion of preferred stock. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The portion of net income (loss) attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent combined with the aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the charge (recovery) related to the write-down of emission allowance inventory, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This item represents an other than temporary decline in value, net of tax, that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. No authoritative reference available. This element represents other costs that are related to the pending merger with MidAmerican Energy Holdings Company and our pursuit of other strategic alternatives to that merger. No authoritative reference available. This element represents the cash capital contribution required to be made to a subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding for the instrument at that time. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the term over which the deferred environmental costs that were incurred through June 2000 are to be amortized, in years. No authoritative reference available. This element represents the number of major credit rating agencies that would have to rate BGE's senior unsecured credit rating below investment grade for there to be a dividend payment restriction. No authoritative reference available. After-tax gain or loss adjustment to accumulated other comprehensive income or loss resulting from funded status adjustments to the entity's defined benefit pension and/or other postretirement plans. No authoritative reference available. Schedule of the tax expense (benefit) recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. No authoritative reference available. No authoritative reference available. No authoritative reference available. Additional investment required of coventurer according to the agreement. No authoritative reference available. The gross carrying amount of the non-derivative energy contracts acquired, certain contracts which no longer qualify as derivatives due to the absence of a liquid market, and derivatives designated as normal purchases and normal sales. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the schedule disclosing total capitalization, which includes long-term debt, common stock, noncontrolling interests, and preference stock. No authoritative reference available. No authoritative reference available. No authoritative reference available. The number of federal merger cases voluntarily dismissed. No authoritative reference available. This element may be used to capture the complete disclosure of all significant events which have occurred during the period. No authoritative reference available. Describes an entity's application of the equity method of accounting to investments in common stock or other interests including unconsolidated subsidiaries, corporate joint ventures, noncontrolling interests in real estate ventures, limited partnerships, and limited liability companies. The description includes information such as: (1) initially recording an investment in the stock of an investee at cost; (2) adjusting the carrying amount of the investment to recognize the investor's share of the earnings or losses of the investee after the date of acquisition; and (3) adjustments to reflect the investor's share of changes in the investee's capital (dividends). This disclosure may also include a detailed description of the policy for determining the amount of equity method losses recognized after an investment has been reduced to zero as a result of previous losses, reasons for not using the equity method when the investor company owns 20 percent or more of the voting stock of the investee's company (including identification of the significant investee), reasons for using the equity method when the ownership percentage is less than 20 percent, and discussion of recognition of equity method losses when an investor's total investment in an investee includes, in addition to an investment in common stock, other investments such as preferred stock and loans to the investee. An entity also may describe how such investments are assessed for impairment. No authoritative reference available. The total fair value of options for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. No authoritative reference available. The after-tax amount currently available under an asset put arrangement that allows the entity to sell certain non-nuclear generation assets, at pre-agreed prices, to its joint venture partner for aggregate proceeds. No authoritative reference available. Disclosure of accumulated benefit obligations and fair values of plan assets of pension plans and/or other employee benefit plans where the accumulated benefit obligation exceeds the fair value of plan assets. No authoritative reference available. The threshold for percentage voting interest held used by the reporting entity to account for its investments using the cost method of accounting. No authoritative reference available. This element represents the net emission allowance impairment for sulfur dioxide, pre-tax. No authoritative reference available. Schedule summarizing the impacts of funded status adjustments to pension and postretirement obligations. No authoritative reference available. This element represents the cap for the rate increase in the first electric distribution rate case as agreed to with the state and public service commission. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the amount of workforce reduction costs recognized during the period, net of tax. No authoritative reference available. The carrying amount of the consolidated Variable Interest Entity's current assets included in the reporting entity's statement of financial position. No authoritative reference available. This element represents the minimum percentage of fixed-price contracts for forecasted system supply requirements required of a public utility subsidiary by the public service commission. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the sum of other pre-tax items. No authoritative reference available. Number of new stock issued during its initial public offering No authoritative reference available. The net change during the reporting period of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements, excluding collateral. No authoritative reference available. Amount of amortization of the basis difference in investment in affiliate after-tax. The basis difference represents the difference between the fair value of our investment in affiliate less our share of the affiliate's equity because the affiliate's assets and liabilities retained their historical carrying value. No authoritative reference available. No authoritative reference available. No authoritative reference available. The number of variable interest entities formed during the period. No authoritative reference available. This element represents the dry bulk vessels sold by a shipping joint venture, number. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Represents the amount of liabilities measured at fair value on a recurring basis. No authoritative reference available. The portion of the difference between total income tax expense (benefit) as reported in the Income Statement for the period and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible interest expense on mandatorily redeemable preferred stock under enacted tax laws. No authoritative reference available. Schedule of the net fair value of derivative contracts containing credit-risk related contingent features after considering the mitigating effects of offsetting positions under master netting arrangements. This schedule also includes the amount of collateral posted and the additional collateral that would be required to be posted with counterparties in the event of a credit downgrade to below investment grade after giving consideration to offsetting derivative and non-derivative positions under master netting agreements. No authoritative reference available. No authoritative reference available. No authoritative reference available. Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Also includes amounts related to exchange-traded derivatives including related margin postings. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the pre tax charge that is related to the write-down of emission allowance inventory. No authoritative reference available. No authoritative reference available. No authoritative reference available. The reporting entity's net investment in two electric generating plants in which we have an undivided interest as of the reporting date. No authoritative reference available. This element represents the net emission allowance impairment for nitrogen oxide and an additional impairment for sulfur dioxide, pre-tax. No authoritative reference available. The net cash inflow (outflow) from financing activity for the period associated with derivative liabilities that were out-of-the-money No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The aggregate amount of payments due in the first year after the balance sheet date to reduce an unrecorded unconditional purchase obligation. No authoritative reference available. This element represents the schedule disclosing the details of rate stabilization bonds. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the accrual of a residential customer credit, net of tax. No authoritative reference available. Decrease in noncontrolling interest balance as a result of deconsolidating a subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. The carrying amount of the consolidated Variable Interest Entity's noncurrent portion of liabilities included in the reporting entity's statement of financial position. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the ratio of initial collateral posted as per terms of agreement to the previous collateral requirements. No authoritative reference available. The value of the cash and noncash consideration given (for example, liability, equity) in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Maximum coverage per occurrence for Certified acts of terrorism as defined under the Terrorism Risk Insurance Extension Act of 2005 and the Terrorism Risk Insurance Program Reauthorization Act of 2007 provided by the reporting entity's insurance arrangement. No authoritative reference available. This element represents net transfers into and out of assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period. No authoritative reference available. No authoritative reference available. No authoritative reference available. The total cost to be incurred by us for developing and constructing this project in order to get the project ready for commercial operation. No authoritative reference available. This element represents the permissible accounting treatments for derivatives and the recognition and measurement criteria for each on the balance sheet and income statement. No authoritative reference available. No authoritative reference available. No authoritative reference available. The amount of termination benefits excluded from net periodic defined benefit costs in the period. No authoritative reference available. The high end of the range of the required percentage voting interest to be held by the reporting entity to use the equity method of accounting to report investments, corporate joint ventures, partnerships and affiliated companies in its consolidated financial statements. If the reporting entity can exercise control over the operations and policies, accounting rules require consolidation of the investee's financial statements. No authoritative reference available. This element represents the estimated amount of the liability for a one-time per customer distribution rate credit of a subsidiary. No authoritative reference available. No authoritative reference available. No authoritative reference available. The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period. No authoritative reference available. The number of fossil fuel plants involved in the matter. No authoritative reference available. This element represents the amount of minority interest gain on divestitures of the reporting entity. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. A schedule of data and information related to equity and cost method investments in joint ventures, qualifying facilities and power projects and common stock. The disclosure may include: (a) the name of each investee or group of investments for which combined disclosure is appropriate, and (2) the carrying value of each identified investment based on its quoted market price, if available. No authoritative reference available. Represents the low end of the range of the required purchases of power from a related party, that is not sold to third parties, over the specified term of a power purchase agreement, percent. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the additional amount accrued for the one-time per customer distribution rate credit of a subsidiary. No authoritative reference available. This element represents the ownership interest held in a shipping joint venture, percentage. No authoritative reference available. Portion of fixed-rate debt maturing 2012-2015 for which an interest rate swap designated as a fair value hedge was terminated. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the descriptions and amounts of material transactions, such as impairment charges, disposals of business, workforce reduction costs, and certain regulatory matters. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the percentage of ownership below which an equity investment will be deconsolidated. No authoritative reference available. No authoritative reference available. No authoritative reference available. NonCurrent portion of remaining unamortized balance of non-derivative energy contracts that we acquired or derivatives designated as normal purchases and normal sales previously recorded as "Derivative assets." No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Tax effect of other comprehensive income related to other equity investments. No authoritative reference available. No authoritative reference available. No authoritative reference available. Including both current and noncurrent portions, the amount of long-term debt that bears interest at variable rates. No authoritative reference available. The gross unrealized gains for securities which are categorized neither as held-to-maturity nor trading securities. No authoritative reference available. This element represents the after-tax loss on the sale of a majority of our international commodities operation, Houston-based gas trading operation, certain other trading operations, and a uranium market participant, the reclassification of losses on previously designated cash-flow hedges from Accumulated Other Comprehensive Loss, and earnings that are no longer part of our core business. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the after-tax loss related to a cancelled wind development project. No authoritative reference available. No authoritative reference available. No authoritative reference available. Schedule of the fair value measurement of plan assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs). No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the total outstanding common shares (after giving effect to the issuance) issued upon conversion of preferred stock related to the termination of a merger agreement, percent. No authoritative reference available. This element is used to capture the disclosure of how cash proceeds paid or received at the inception of energy purchase and sale contracts are recorded. No authoritative reference available. Including both current and noncurrent portions, the amount of long-term debt that bears interest at fixed rates. No authoritative reference available. This element represents the net unrealized gains/losses on nuclear decommissioning trust funds, net of taxes during the reporting period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the number of additional upstream gas properties where estimated future cash flows are less than the carrying value. No authoritative reference available. This schedule represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments of the subject investments in debt and equity securities. No authoritative reference available. No authoritative reference available. No authoritative reference available. The cash outflow for the issuance of loan receivable arising from the financing of goods and services. No authoritative reference available. This element represents the tax effect of the net unrealized losses on defined benefit plans during the reporting period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value, net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. The net cash outflow for acquired energy purchase and sale agreements. These agreements had contract prices that differed from market prices at closing, which resulted in cash payments to the counterparty at the acquisition of the agreements. No authoritative reference available. No authoritative reference available. No authoritative reference available. The maximum period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in years. No authoritative reference available. No authoritative reference available. No authoritative reference available. Maximum annual aggregate insurance coverage for non-certified acts of terrorism provided by the reporting entity's insurance arrangement. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Premium rate applied to principal amount upon retirement of debt pursuant to cash tender offer. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the loss from discontinued operations relating to income tax adjustments, after-tax. No authoritative reference available. This element represents the approximate total of the resumed collection of the residential return portion of the SOS administrative charge. No authoritative reference available. This element represents the loss from discontinued operations due to post-closing working capital and income tax adjustments, after-tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element represents the accrual of a residential customer credit, net of tax. No authoritative reference available. This element represents the amount the required collateral was subsequently reduced to under the agreement. No authoritative reference available. The carrying amount of the liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE). No authoritative reference available. This element represents the number of approaches used to determine the fair value of an equity method investment. No authoritative reference available. No authoritative reference available. No authoritative reference available. Current portion of remaining unamortized balance of non-derivative energy contracts that we acquired or derivatives designated as normal purchases and normal sales previously recorded as "Derivative assets." No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Estimate of the amount of reasonably possible loss exposure in excess of the amount accrued for remediation, site restoration, post closure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets. No authoritative reference available. The percentage credit exposure of the entity to any single obligor or counterparty (including a collection of counterparties based in a single country other than the United States) that is considered to be a significant concentration of credit risk. No authoritative reference available. This element represents the schedule disclosing weighted-average interest rates for variable rate debt. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. No authoritative reference available.