2.2.0.7 true Consolidated Statement of Cash Flows (USD $) 00200 - Statement - Consolidated Statement of Cash Flows true false In Millions false false 1 USD true false false false CONSOLIDATED EDISON INC [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember Unit12 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit14 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit1 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD true false false false CONSOLIDATED EDISON INC [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember Unit12 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit14 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit1 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD true false false false CECONY [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ed_CeconyMember dei_LegalEntityAxis explicitMember Unit12 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 4 USD true false false false CECONY [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi ed_CeconyMember dei_LegalEntityAxis explicitMember Unit12 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit1 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 5 OPERATING ACTIVITIES 3 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:stringItemType string The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income. false 6 Net Income 4 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 true true false false 768000000 768 true false false 2 true true false false 675000000 675 true false false 3 true true false false 717000000 717 true false false 4 true true false false 623000000 623 true false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 false 7 PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME 4 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 8 Depreciation and amortization 5 us-gaap_DepreciationDepletionAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 626000000 626 true false false 2 false true false false 589000000 589 true false false 3 false true false false 586000000 586 true false false 4 false true false false 554000000 554 true false false xbrli:monetaryItemType monetary The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. No authoritative reference available. false 9 Deferred income taxes 5 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 562000000 562 true false false 2 false true false false 255000000 255 true false false 3 false true false false 562000000 562 true false false 4 false true false false 222000000 222 true false false xbrli:monetaryItemType monetary The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 289 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 false 10 Rate case amortization and accruals 5 us-gaap_AdjustmentForAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 8000000 8 true false false 2 false true false false -38000000 -38 true false false 3 false true false false 8000000 8 true false false 4 false true false false -38000000 -38 true false false xbrli:monetaryItemType monetary The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of intangible assets over their estimated remaining economic lives. No authoritative reference available. false 11 Common equity component of allowance for funds used during construction 5 us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -13000000 -13 true false false 2 false true false false -9000000 -9 true false false 3 false true false false -10000000 -10 true false false 4 false true false false -8000000 -8 true false false xbrli:monetaryItemType monetary Total increase in earnings in the period representing the cost of equity (rate of return) and borrowed funds (interest rate) used to finance construction of regulated assets, which is expected to be recovered through rate adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 15 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 90 -Paragraph 8 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 92 -Paragraph 8, 9, 12 false 12 Net derivative (gains)/losses 5 us-gaap_GainLossOnSaleOfDerivatives us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 35000000 35 true false false 2 false true false false -2000000 -2 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:monetaryItemType monetary The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings . Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 13 Other non-cash items (net) 5 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false -19000000 -19 true false false 2 false true false false -39000000 -39 true false false 3 false true false false -96000000 -96 true false false 4 false true false false -46000000 -46 true false false xbrli:monetaryItemType monetary Transactions that do not result in 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 cash flow method. This element is used when there is not a more specific and appropriate element. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 14 CHANGES IN ASSETS AND LIABILITIES 4 us-gaap_IncreaseDecreaseInOperatingCapitalAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 15 Accounts receivable - customers, less allowance for uncollectibles 5 us-gaap_IncreaseDecreaseInAccountsReceivable us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -114000000 -114 true false false 2 false true false false 55000000 55 true false false 3 false true false false -84000000 -84 true false false 4 false true false false 39000000 39 true false false xbrli:monetaryItemType monetary 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 16 Materials and supplies, including fuel oil and gas in storage 5 us-gaap_IncreaseDecreaseInInventories us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -9000000 -9 true false false 2 false true false false 118000000 118 true false false 3 false true false false -9000000 -9 true false false 4 false true false false 99000000 99 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 17 Other receivables and other current assets 5 us-gaap_IncreaseDecreaseInOtherReceivables us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -114000000 -114 true false false 2 false true false false -171000000 -171 true false false 3 false true false false -208000000 -208 true false false 4 false true false false -49000000 -49 true false false xbrli:monetaryItemType monetary The net change during the reporting period in other amounts due to the reporting entity, which are not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 18 Prepayments 5 us-gaap_IncreaseDecreaseInPrepaidExpense us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -473000000 -473 true false false 2 false true false false 257000000 257 true false false 3 false true false false -309000000 -309 true false false 4 false true false false 177000000 177 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 19 Recoverable energy costs 5 us-gaap_IncreaseDecreaseInOverUnderEnergyRecovery us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0     true false false 2 false true false false 102000000 102 true false false 3 false false false false 0 0     true false false 4 false true false false 127000000 127 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the value of the asset (liability) created by and over (under) recovery. An over under-recovery means that the basic energy price based on the daily product price and exchange rate is less (over) or more (under) than the basic energy price used in the calculation of the monthly retail energy product. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 20 Accounts payable 5 us-gaap_IncreaseDecreaseInAccountsPayable us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -105000000 -105 true false false 2 false true false false -168000000 -168 true false false 3 false true false false -96000000 -96 true false false 4 false true false false -245000000 -245 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate amount of obligations due within one year (or one business cycle). This may include trade payables, amounts due to related parties, royalties payable, and other obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 21 Pensions and retiree benefits 5 us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -33000000 -33 true false false 2 false true false false -35000000 -35 true false false 3 false true false false -30000000 -30 true false false 4 false true false false -22000000 -22 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the amount due to fund pension and non-pension benefits to employees, retired and disabled former employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 22 Accrued taxes 5 us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 63000000 63 true false false 2 false true false false -9000000 -9 true false false 3 false true false false 20000000 20 true false false 4 false true false false -3000000 -3 true false false xbrli:monetaryItemType monetary The net change during the period in the amount of cash payments due to taxing authorities for non-income-related taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 23 Accrued interest 5 us-gaap_IncreaseDecreaseInInterestPayableNet us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 45000000 45 true false false 2 false true false false 53000000 53 true false false 3 false true false false 37000000 37 true false false 4 false true false false 31000000 31 true false false xbrli:monetaryItemType monetary The net change during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 24 Deferred charges, deferred derivative losses, noncurrent assets and other regulatory assets 5 us-gaap_IncreaseDecreaseInDeferredCharges us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -472000000 -472 true false false 2 false true false false -9000000 -9 true false false 3 false true false false -374000000 -374 true false false 4 false true false false 2000000 2 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the value of expenditures made during the current reporting period for benefits that will be received over a period of years. Deferred charges differ from prepaid expenses in that they usually extend over a long period of time and may or may not be regularly recurring costs of operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 25 Deferred credits and other regulatory liabilities 5 us-gaap_IncreaseDecreaseInDeferredLiabilities us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 142000000 142 true false false 2 false true false false -118000000 -118 true false false 3 false true false false 131000000 131 true false false 4 false true false false -90000000 -90 true false false xbrli:monetaryItemType monetary Change during the period in carrying value for all deferred liabilities due within one year or operating cycle. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 26 Other assets 5 us-gaap_IncreaseDecreaseInOtherOperatingAssets us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -8000000 -8 true false false 2 false true false false -4000000 -4 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:monetaryItemType monetary The net change during the reporting period in other operating assets not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 27 Other liabilities 5 us-gaap_IncreaseDecreaseInOtherOperatingLiabilities us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 82000000 82 true false false 2 false true false false -33000000 -33 true false false 3 false true false false 93000000 93 true false false 4 false true false false -47000000 -47 true false false xbrli:monetaryItemType monetary The net change during the reporting period in other operating obligations not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 28 NET CASH FLOWS FROM OPERATING ACTIVITIES 4 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 971000000 971 true false false 2 false true false false 1469000000 1469 true false false 3 false true false false 938000000 938 true false false 4 false true false false 1326000000 1326 true false false xbrli:monetaryItemType monetary The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 29 INVESTING ACTIVITIES 3 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 30 Utility construction expenditures 4 us-gaap_PaymentsForConstructionInProcess us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -1455000000 -1455 true false false 2 false true false false -1524000000 -1524 true false false 3 false true false false -1371000000 -1371 true false false 4 false true false false -1454000000 -1454 true false false xbrli:monetaryItemType monetary The cash outflow from construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 false 31 Cost of removal less salvage 4 us-gaap_PaymentsForProceedsFromRemovalCosts us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -103000000 -103 true false false 2 false true false false -126000000 -126 true false false 3 false true false false -100000000 -100 true false false 4 false true false false -123000000 -123 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from the costs of disposing of plant, whether by demolishing, dismantling, abandoning, sale, and so forth during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 16, 17 false 32 Non-utility construction expenditures 4 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -6000000 -6 true false false 2 false true false false -5000000 -5 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph c false 33 Common equity component of allowance for funds used during construction 4 us-gaap_AllowanceForFundsUsedDuringConstructionInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 13000000 13 true false false 2 false true false false 9000000 9 true false false 3 false true false false 10000000 10 true false false 4 false true false false 8000000 8 true false false xbrli:monetaryItemType monetary Cash inflow due to change during the period in the allowance for other funds used during construction classified as an investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 false 34 Purchase of additional ownership interest in Honeoye Storage Corporation 4 us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -12000000 -12 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash outflow associated with the purchase of noncontrolling interest during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph b false 35 Loan to affiliate 4 us-gaap_ProceedsFromCollectionOfAdvanceToAffiliate us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0     true false false 4 false true false false 113000000 113 true false false xbrli:monetaryItemType monetary The cash inflow from the collection of money previously advanced to an entity that is related to it but not strictly controlled. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph a false 36 NET CASH FLOWS USED IN INVESTING ACTIVITIES 4 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -1563000000 -1563 true false false 2 false true false false -1646000000 -1646 true false false 3 false true false false -1461000000 -1461 true false false 4 false true false false -1456000000 -1456 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 37 FINANCING ACTIVITIES 3 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 38 Net proceeds from short-term debt 4 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 846000000 846 true false false 2 false true false false 146000000 146 true false false 3 false true false false 832000000 832 true false false 4 false true false false 174000000 174 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 false 39 Retirement of long-term debt 4 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -781000000 -781 true false false 2 false true false false -279000000 -279 true false false 3 false true false false -625000000 -625 true false false 4 false true false false -275000000 -275 true false false xbrli:monetaryItemType monetary The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b false 40 Issuance of long-term debt 4 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 870000000 870 true false false 2 false true false false 750000000 750 true false false 3 false true false false 700000000 700 true false false 4 false true false false 750000000 750 true false false xbrli:monetaryItemType monetary The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b false 41 Issuance of common stock 4 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 78000000 78 true false false 2 false true false false 25000000 25 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:monetaryItemType monetary The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a false 42 Debt issuance costs 4 us-gaap_PaymentsOfDebtIssuanceCosts us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -6000000 -6 true false false 2 false true false false -5000000 -5 true false false 3 false true false false -6000000 -6 true false false 4 false true false false -5000000 -5 true false false xbrli:monetaryItemType monetary The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 95-13 false 43 Capital contribution by parent 4 us-gaap_ProceedsFromContributionsFromParent us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false 36000000 36 true false false 4 false false false false 0 0     true false false xbrli:monetaryItemType monetary The cash inflow from parent as a source of financing that is recorded as additional paid in capital. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 false 44 Common stock dividends 4 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -468000000 -468 true false false 2 false true false false -450000000 -450 true false false 3 false true false false -502000000 -502 true false false 4 false true false false -489000000 -489 true false false xbrli:monetaryItemType monetary The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a false 45 Preferred stock dividends 4 us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -9000000 -9 true false false 2 false true false false -9000000 -9 true false false 3 false true false false -8000000 -8 true false false 4 false true false false -8000000 -8 true false false xbrli:monetaryItemType monetary The cash outflow for the return on capital for preferred shareholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a false 46 NET CASH FLOWS FROM FINANCING ACTIVITIES 4 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 530000000 530 true false false 2 false true false false 178000000 178 true false false 3 false true false false 427000000 427 true false false 4 false true false false 147000000 147 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from financing activity for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 47 CASH AND TEMPORARY CASH INVESTMENTS: 3 us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 48 NET CHANGE FOR THE PERIOD 4 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -62000000 -62 true false false 2 false true false false 1000000 1 true false false 3 false true false false -96000000 -96 true false false 4 false true false false 17000000 17 true false false xbrli:monetaryItemType monetary The net change between the beginning and ending balance of cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 49 BALANCE AT BEGINNING OF PERIOD 4 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false true false false 260000000 260 true false false 2 false true false false 74000000 74 true false false 3 false true false false 131000000 131 true false false 4 false true false false 37000000 37 true false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 50 BALANCE AT END OF PERIOD 4 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 198000000 198 true false false 2 false true false false 75000000 75 true false false 3 false true false false 35000000 35 true false false 4 false true false false 54000000 54 true false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 52 Cash paid during the period for: 4 ed_CashPaidDuringPeriodForAbstract ed false na duration Cash Paid During Period For [Abstract] false false false false false true false false false false false terselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false xbrli:stringItemType string Cash Paid During Period For [Abstract] false 53 Interest 5 us-gaap_InterestPaid us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false 394000000 394 true false false 2 false true false false 377000000 377 true false false 3 false true false false 357000000 357 true false false 4 false true false false 356000000 356 true false false xbrli:monetaryItemType monetary The amount of cash paid during the current period for interest owed on money borrowed; includes amount of interest capitalized Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 29 false 54 Income taxes 5 us-gaap_IncomeTaxesPaid us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 true true false false 284000000 284 true false false 2 true true false false 4000000 4 true false false 3 true true false false 263000000 263 true false false 4 true true false false 17000000 17 true false false xbrli:monetaryItemType monetary The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 29 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 27 -Subparagraph f false 4 49 false Millions UnKnown UnKnown false true