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Regulatory Matters (Tables)
9 Months Ended
Sep. 30, 2021
Regulated Operations [Abstract]  
Schedule of Regulatory Assets
Regulatory assets and liabilities at September 30, 2021 and December 31, 2020 were comprised of the following items:
 
  
         Con Edison        CECONY
(Millions of Dollars)2021202020212020
Regulatory assets
Unrecognized pension and other postretirement costs$2,527$3,241$2,394$3,065
Environmental remediation costs846865780791
Pension and other postretirement benefits deferrals438315382272
Revenue taxes385356369342
COVID-19 pandemic deferrals274115269113
Deferred storm costs27719515583 
Property tax reconciliation245241245239
MTA power reliability deferral152188152188
System peak reduction and energy efficiency programs145124145124
Deferred derivative losses - long term136120124111
Municipal infrastructure support costs49624962
Brooklyn Queens demand management program35363536
Meadowlands heater odorization project30323032
Preferred stock redemption20212021
Non-wire alternative projects23182318
Unamortized loss on reacquired debt17211519
Recoverable REV demonstration project costs15201418
Gate station upgrade project 15251525
Other274200257186
Regulatory assets – noncurrent5,9036,1955,4735,745
Deferred derivative losses - short term166190155177
Recoverable energy costs39763267
Regulatory assets – current205266187244
Total Regulatory Assets$6,108$6,461$5,660$5,989
Regulatory liabilities
Future income tax$2,040$2,207$1,896$2,062
Allowance for cost of removal less salvage1,1141,090950932
Net unbilled revenue deferrals184198184198
TCJA net benefits* 167295164286
Net proceeds from sale of property 111137111137
Deferred derivative gains - long term11051014
Pension and other postretirement benefit deferrals98855346
System benefit charge carrying charge71646357
Property tax refunds35363535
BQDM and REV Demo reconciliations26272225
Sales and use tax refunds18161716
Energy efficiency portfolio standard unencumbered funds17119— 
Earnings sharing - electric, gas and steam13151010
Unrecognized other postretirement costs1211— — 
Settlement of gas proceedings11211121
Settlement of prudence proceeding6565
Workers' compensation5353
Other341297294257
Regulatory liabilities – noncurrent4,3794,5133,9414,094
Deferred derivative gains - short term45184237
Refundable energy costs312854
Revenue decoupling mechanism8— — 
Regulatory liabilities – current4903642811
Total Regulatory Liabilities$4,869$4,549$4,369$4,105
* See "Other Regulatory Matters," above.
Schedule of Regulatory Liabilities
Regulatory assets and liabilities at September 30, 2021 and December 31, 2020 were comprised of the following items:
 
  
         Con Edison        CECONY
(Millions of Dollars)2021202020212020
Regulatory assets
Unrecognized pension and other postretirement costs$2,527$3,241$2,394$3,065
Environmental remediation costs846865780791
Pension and other postretirement benefits deferrals438315382272
Revenue taxes385356369342
COVID-19 pandemic deferrals274115269113
Deferred storm costs27719515583 
Property tax reconciliation245241245239
MTA power reliability deferral152188152188
System peak reduction and energy efficiency programs145124145124
Deferred derivative losses - long term136120124111
Municipal infrastructure support costs49624962
Brooklyn Queens demand management program35363536
Meadowlands heater odorization project30323032
Preferred stock redemption20212021
Non-wire alternative projects23182318
Unamortized loss on reacquired debt17211519
Recoverable REV demonstration project costs15201418
Gate station upgrade project 15251525
Other274200257186
Regulatory assets – noncurrent5,9036,1955,4735,745
Deferred derivative losses - short term166190155177
Recoverable energy costs39763267
Regulatory assets – current205266187244
Total Regulatory Assets$6,108$6,461$5,660$5,989
Regulatory liabilities
Future income tax$2,040$2,207$1,896$2,062
Allowance for cost of removal less salvage1,1141,090950932
Net unbilled revenue deferrals184198184198
TCJA net benefits* 167295164286
Net proceeds from sale of property 111137111137
Deferred derivative gains - long term11051014
Pension and other postretirement benefit deferrals98855346
System benefit charge carrying charge71646357
Property tax refunds35363535
BQDM and REV Demo reconciliations26272225
Sales and use tax refunds18161716
Energy efficiency portfolio standard unencumbered funds17119— 
Earnings sharing - electric, gas and steam13151010
Unrecognized other postretirement costs1211— — 
Settlement of gas proceedings11211121
Settlement of prudence proceeding6565
Workers' compensation5353
Other341297294257
Regulatory liabilities – noncurrent4,3794,5133,9414,094
Deferred derivative gains - short term45184237
Refundable energy costs312854
Revenue decoupling mechanism8— — 
Regulatory liabilities – current4903642811
Total Regulatory Liabilities$4,869$4,549$4,369$4,105
* See "Other Regulatory Matters," above.
Schedule of Regulatory Assets Not Earning Return
Regulatory Assets Not Earning a Return*
                  Con Edison                CECONY
(Millions of Dollars)2021202020212020
Unrecognized pension and other postretirement costs$2,527$3,241$2,394$3,065
Environmental remediation costs832855765781
Revenue taxes364336349323
Deferred derivative losses - long term136120124111
Other56245624
Deferred derivative losses - current166190155177
Total$4,081$4,766$3,843$4,481
*This table includes regulatory assets not earning a return for which no cash outlay has been made.