-Network: (101 - Statement - Statement Of Financial Position Classified)

-Entity [Domain] {ID1}

CONSOLIDATED EDISON INC {ID2}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID3}

-Statement of Financial Position [Abstract] {ID4}

-Statement [Table] {ID5}

-Statement [Line Items] {ID6}

-ASSETS {ID7}

-UTILITY PLANT AT ORIGINAL COST {ID8}

Electric {ID9}

Gas {ID10}

Steam {ID11}

General {ID12}

TOTAL {ID13}

Less: Accumulated depreciation {ID14}

Net {ID15}

Construction work in progress {ID16}

NET UTILITY PLANT {ID17}

-NON-UTILITY PLANT {ID18}

Non-utility property, less accumulated depreciation {ID19}

Construction work in progress {ID20}

NET PLANT {ID21}

-CURRENT ASSETS {ID22}

Cash and temporary cash investments {ID23}

Accounts receivable-customers, less allowance for uncollectible accounts {ID24}

Other receivables, less allowance for uncollectible accounts {ID25}

Accrued unbilled revenue {ID26}

Accounts receivable from affiliated companies {ID27}

Fuel oil, at average cost {ID28}

Gas in storage, at average cost {ID29}

Materials and supplies, at average cost {ID30}

Prepayments {ID31}

Fair value of derivative assets {ID32}

Recoverable energy costs {ID33}

Deferred derivative losses {ID34}

Other current assets {ID35}

TOTAL CURRENT ASSETS {ID36}

INVESTMENTS {ID37}

-DEFERRED CHARGES, REGULATORY ASSETS AND NONCURRENT ASSETS {ID38}

Goodwill {ID39}

Intangible assets, less accumulated amortization of $2 in 2009 and 2008 {ID40}

Regulatory assets {ID41}

Other deferred charges and noncurrent assets {ID42}

TOTAL DEFERRED CHARGES, REGULATORY ASSETS AND NONCURRENT ASSETS {ID43}

TOTAL ASSETS {ID44}

-CAPITALIZATION AND LIABILITIES {ID45}

-CAPITALIZATION {ID46}

Common shareholder's equity (See Statement of Common Shareholder's Equity) {ID47}

Preferred stock {ID48}

Long-term debt {ID49}

TOTAL CAPITALIZATION {ID50}

-NONCURRENT LIABILITIES {ID51}

Obligations under capital leases {ID52}

Provision for injuries and damages {ID53}

Pensions and retiree benefits {ID54}

Superfund and other environmental costs {ID55}

Uncertain income taxes {ID56}

Asset retirement obligations {ID57}

Fair value of derivative liabilities {ID58}

Other noncurrent liabilities {ID59}

TOTAL NONCURRENT LIABILITIES {ID60}

-CURRENT LIABILITIES {ID61}

Long-term debt due within one year {ID62}

Notes payable {ID63}

Accounts payable {ID64}

Accounts payable to affiliated companies {ID65}

Customer deposits {ID66}

Accrued taxes {ID67}

Accrued taxes to affiliated companies {ID68}

Accrued interest {ID69}

Accrued wages {ID70}

Fair value of derivative liabilities {ID71}

Deferred derivative gains {ID72}

Deferred income taxes-recoverable energy costs {ID73}

Other current liabilities {ID74}

TOTAL CURRENT LIABILITIES {ID75}

-DEFERRED CREDITS AND REGULATORY LIABILITIES {ID76}

Deferred income taxes and investment tax credits {ID77}

Regulatory liabilities {ID78}

Other deferred credits {ID79}

TOTAL DEFERRED CREDITS AND REGULATORY LIABILITIES {ID80}

TOTAL CAPITALIZATION AND LIABILITIES {ID81}

-Network: (102 - Statement - Statement Of Financial Position Classified (Parenthetical))

-Entity [Domain] {ID82}

CONSOLIDATED EDISON INC {ID83}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID84}

-Statement of Financial Position [Abstract] {ID85}

-Statement [Table] {ID86}

-Statement [Line Items] {ID87}

Non-utility property, accumulated depreciation {ID88}

Accounts receivable-customers, allowance for uncollectible accounts {ID89}

Other receivables, allowance for uncollectible accounts {ID90}

Intangible assets, accumulated amortization {ID91}

-Network: (103 - Statement - Statement Of Income Alternative)

-Entity [Domain] {ID92}

CONSOLIDATED EDISON INC {ID93}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID94}

-Income Statement [Abstract] {ID95}

-Statement [Table] {ID96}

-Statement [Line Items] {ID97}

-OPERATING REVENUES {ID98}

Electric {ID99}

Gas {ID100}

Steam {ID101}

Non-utility {ID102}

TOTAL OPERATING REVENUES {ID103}

-OPERATING EXPENSES {ID104}

Purchased power {ID105}

Fuel {ID106}

Gas purchased for resale {ID107}

Other operations and maintenance {ID108}

Depreciation and amortization {ID109}

Taxes, other than income taxes {ID110}

Income taxes {ID111}

TOTAL OPERATING EXPENSES {ID112}

Gain on sale of generation projects {ID113}

OPERATING INCOME {ID114}

-OTHER INCOME (DEDUCTIONS) {ID115}

Investment and other income {ID116}

Allowance for equity funds used during construction {ID117}

Other deductions {ID118}

Income taxes {ID119}

TOTAL OTHER INCOME (DEDUCTIONS) {ID120}

-INTEREST EXPENSE {ID121}

Interest on long-term debt {ID122}

Other interest {ID123}

Allowance for borrowed funds used during construction {ID124}

NET INTEREST EXPENSE {ID125}

INCOME FROM CONTINUING OPERATIONS {ID126}

-INCOME FROM DISCONTINUED OPERATIONS {ID127}

Gain on sale of generation projects, net of tax expense of $174 in 2008 {ID128}

Income from discontinued operations, net of tax expense of $1 and $3 in 2008 {ID129}

TOTAL INCOME FROM DISCONTINUED OPERATIONS {ID130}

NET INCOME {ID131}

PREFERRED STOCK DIVIDEND REQUIREMENTS {ID132}

NET INCOME FOR COMMON STOCK {ID133}

-EARNINGS PER COMMON SHARE-BASIC {ID134}

Continuing operations {ID135}

Discontinued operations {ID136}

Net income for common stock {ID137}

-EARNINGS PER COMMON SHARE-DILUTED {ID138}

Continuing operations {ID139}

Discontinued operations {ID140}

Net income for common stock {ID141}

DIVIDENDS DECLARED PER SHARE OF COMMON STOCK {ID142}

AVERAGE NUMBER OF SHARES OUTSTANDING-BASIC (IN MILLIONS) {ID143}

AVERAGE NUMBER OF SHARES OUTSTANDING-DILUTED (IN MILLIONS) {ID144}

-Network: (104 - Statement - Statement Of Income Alternative (Parenthetical))

-Entity [Domain] {ID145}

CONSOLIDATED EDISON INC {ID146}

-Income Statement [Abstract] {ID147}

-Statement [Table] {ID148}

-Statement [Line Items] {ID149}

Gain on sale of generation projects, tax expense {ID150}

Income from discontinued operations, tax expense {ID151}

-Network: (105 - Statement - Statement Of Other Comprehensive Income)

-Entity [Domain] {ID152}

CONSOLIDATED EDISON INC {ID153}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID154}

-Statement of Income and Comprehensive Income [Abstract] {ID155}

-Statement [Table] {ID156}

-Statement [Line Items] {ID157}

Net income {ID158}

-OTHER COMPREHENSIVE INCOME, NET OF TAXES {ID159}

Pension plan liability adjustments, net of taxes of $1 and $2 in 2009 and $1 and $1 in 2008, respectively {ID160}

Unrealized losses on derivatives qualified as cash flow hedges, net of taxes of $(1) in 2008 {ID161}

Less: Reclassification adjustment for losses included in net income, net of taxes of $0 in 2009 and $(1) and $(1) in 2008 {ID162}

Less: Reclassification adjustment for unrealized losses included in regulatory assets, net of taxes of $(5) in 2008 {ID163}

TOTAL OTHER COMPREHENSIVE INCOME, NET OF TAXES {ID164}

COMPREHENSIVE INCOME {ID165}

Preferred stock dividend requirements of subsidiary {ID166}

COMPREHENSIVE INCOME FOR COMMON STOCK {ID167}

OTHER COMPREHENSIVE INCOME, NET OF TAXES {ID168}

-Network: (106 - Statement - Statement Of Other Comprehensive Income (Parenthetical))

-Entity [Domain] {ID169}

CONSOLIDATED EDISON INC {ID170}

-Statement of Income and Comprehensive Income [Abstract] {ID171}

-Statement [Table] {ID172}

-Statement [Line Items] {ID173}

Pension plan liability adjustments, taxes {ID174}

Unrealized losses on derivatives qualified as cash flow hedges, taxes {ID175}

Reclassification adjustment for losses included in net income, taxes {ID176}

Reclassification adjustment for unrealized losses included in regulatory assets, taxes {ID177}

-Network: (107 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income)

-Entity [Domain] {ID178}

CONSOLIDATED EDISON INC {ID179}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID180}

-Statement of Stockholders' Equity [Abstract] {ID181}

-Statement [Table] {ID182}

-Statement, Equity Components [Axis] {ID183}

-Equity Component [Domain] {ID184}

Common Stock Shares {ID185}

Common Stock Amount {ID186}

Additional Paid-In Capital {ID187}

Retained Earnings {ID188}

Treasury Stock Shares {ID189}

Repurchased Con Edison Stock {ID190}

Capital Stock Expense {ID191}

Accumulated Other Comprehensive Income/(Loss) {ID192}

-Statement [Line Items] {ID193}

Accumulated Other Comprehensive Income/(Loss) {ID194}

Beginning Balance {ID195}

Beginning Balance {ID196}

Net income for common stock {ID197}

Net income {ID198}

Common stock dividends {ID199}

Issuance of common shares-dividend reinvestment and employee stock plans {ID200}

Issuance of common shares-dividend reinvestment and employee stock plans {ID201}

Other comprehensive income {ID202}

Adjustment for adoption of FASB Statement No. 157 {ID203}

Ending Balance {ID204}

Capital contribution by parent {ID205}

Cumulative preferred dividends {ID206}

Ending Balance {ID207}

-Network: (108 - Statement - Statement Of Cash Flows Indirect)

-Entity [Domain] {ID208}

CONSOLIDATED EDISON INC {ID209}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID210}

-Statement of Cash Flows [Abstract] {ID211}

-Statement [Table] {ID212}

-Statement [Line Items] {ID213}

-OPERATING ACTIVITIES {ID214}

Net income {ID215}

-PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME {ID216}

Depreciation and amortization {ID217}

Deferred income taxes {ID218}

Rate case amortization and accruals {ID219}

Net transmission and distribution reconciliation {ID220}

Common equity component of allowance for funds used during construction {ID221}

Pre-tax gain on sale of generation projects {ID222}

Net derivative losses {ID223}

Other non-cash items (net) {ID224}

-CHANGES IN ASSETS AND LIABILITIES {ID225}

Accounts receivable-customers, less allowance for uncollectibles {ID226}

Materials and supplies, including fuel oil and gas in storage {ID227}

Other receivables and other current assets {ID228}

Prepayments {ID229}

Recoverable energy costs {ID230}

Accounts payable {ID231}

Pensions and retiree benefits {ID232}

Accrued taxes {ID233}

Accrued interest {ID234}

Deferred charges, noncurrent assets and other regulatory assets {ID235}

Deferred credits and other regulatory liabilities {ID236}

Other assets {ID237}

Other liabilities {ID238}

NET CASH FLOWS FROM OPERATING ACTIVITIES {ID239}

-INVESTING ACTIVITIES {ID240}

Utility construction expenditures {ID241}

Cost of removal less salvage {ID242}

Non-utility construction expenditures {ID243}

Common equity component of allowance for funds used during construction {ID244}

Proceeds from sale of generation projects {ID245}

Purchase of ownership interest in Hawkeye lease {ID246}

Purchase of ownership interest in Newington SCS {ID247}

Loan to affiliate {ID248}

NET CASH FLOWS (USED IN)/FROM INVESTING ACTIVITIES {ID249}

-FINANCING ACTIVITIES {ID250}

Net payments of short-term debt {ID251}

Retirement of long-term debt {ID252}

Issuance of long-term debt {ID253}

Capital contribution by parent {ID254}

Issuance of common stock {ID255}

Debt issuance costs {ID256}

Common stock dividends {ID257}

Preferred stock dividends {ID258}

NET CASH FLOWS (USED IN)/FROM FINANCING ACTIVITIES {ID259}

-CASH AND TEMPORARY CASH INVESTMENTS: {ID260}

NET CHANGE FOR THE PERIOD {ID261}

BALANCE AT BEGINNING OF PERIOD {ID262}

BALANCE AT END OF PERIOD {ID263}

-SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION {ID264}

-Cash paid during the period for: {ID265}

Interest {ID266}

Income taxes {ID267}

-Network: (109 - Disclosure - Notes to Financial Statements)

-Notes to Financial Statements [Abstract] {ID268}

Note A-Summary of Significant Accounting Policies {ID269}

Note B-Regulatory Matters {ID270}

Note C-Long-Term Debt {ID271}

Note D-Short-Term Borrowing {ID272}

Note E-Pension Benefits {ID273}

Note F-Other Postretirement Benefits {ID274}

Note G-Environmental Matters {ID275}

Note H-Other Material Contingencies {ID276}

Note I-Financial Information by Business Segment {ID277}

Note J-Derivative Instruments and Hedging Activities {ID278}

Note K-Fair Value Measurements {ID279}

Note L-New Financial Accounting Standards {ID280}

Note M-Con Edison Development {ID281}

-Network: (110 - Disclosure - Document Information)

-Document Information [Text Block] {ID282}

Document Type {ID283}

Amendment Flag {ID284}

Amendment Description {ID285}

Document Period End Date {ID286}

-Network: (111 - Disclosure - Entity Information)

-Entity [Text Block] {ID287}

Trading Symbol {ID288}

Entity Registrant Name {ID289}

Entity Central Index Key {ID290}

Current Fiscal Year End Date {ID291}

Entity Well-known Seasoned Issuer {ID292}

Entity Current Reporting Status {ID293}

Entity Voluntary Filers {ID294}

Entity Filer Category {ID295}

Entity Common Stock, Shares Outstanding {ID296}

Entity Public Float {ID297}

-Entities [Table] {ID298}

-Legal Entity [Axis] {ID299}

-Entity [Domain] {ID300}

CONSOLIDATED EDISON INC {ID301}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID302}

-Entity Sector Industry Classifications [Table] {ID303}

-Legal Entity [Axis] {ID304}

-Entity [Domain] {ID305}

CONSOLIDATED EDISON INC {ID306}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID307}

-Entity North American Industry Classifications [Table] {ID308}

-Legal Entity [Axis] {ID309}

-Entity [Domain] {ID310}

CONSOLIDATED EDISON INC {ID311}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID312}

-Entity Contact Personnel [Table] {ID313}

-Legal Entity [Axis] {ID314}

-Entity [Domain] {ID315}

CONSOLIDATED EDISON INC {ID316}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID317}

-Entity Addresses [Table] {ID318}

-Legal Entity [Axis] {ID319}

-Entity [Domain] {ID320}

CONSOLIDATED EDISON INC {ID321}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID322}

-Entity Phone Fax Numbers [Table] {ID323}

-Legal Entity [Axis] {ID324}

-Entity [Domain] {ID325}

CONSOLIDATED EDISON INC {ID326}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID327}

-Entity Listings [Table] {ID328}

-Legal Entity [Axis] {ID329}

-Entity [Domain] {ID330}

CONSOLIDATED EDISON INC {ID331}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID332}

-Entity Location [Table] {ID333}

-Legal Entity [Axis] {ID334}

-Entity [Domain] {ID335}

CONSOLIDATED EDISON INC {ID336}

CONSOLIDATED EDISON CO OF NEW YORK INC {ID337}

CONSOLIDATED EDISON INC XBRL Taxonomy Presentation Networks