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Revenue Recognition | 3 Months Ended
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Mar. 31, 2021
Revenue from Contract with Customer [Abstract] |
Revenue Recognition | Revenue Recognition The following table presents, for the three months ended March 31, 2021 and 2020, revenue from contracts with customers as defined in Accounting Standards Codification Topic 606, "Revenue from Contracts with Customers," as well as additional revenue from sources other than contracts with customers, disaggregated by major source.
| For the Three Months Ended March 31, 2021 | For the Three Months Ended March 31, 2020
(Millions of Dollars) | Revenues from contracts with customers |  | Other revenues (a) | Total operating revenues | Revenues from contracts with customers |  | Other revenues (a) | Total operating revenues
CECONY |  |  |  |  |  |  |  |
Electric | $1,966 |  | $2 | $1,968 | $1,732 |  | $38 | $1,770
Gas | 946 |  | 27 | 973 | 833 |  | 1 | 834
Steam | 261 |  | 3 | 264 | 245 |  | 5 | 250
Total CECONY | $3,173 |  | $32 | $3,205 | $2,810 |  | $44 | $2,854
O&R |  |  |  |  |  |  |  |
Electric | 144 |  | 1 | 145 | 128 |  | 8 | 136
Gas | 108 |  | (5) | 103 | 93 |  | 4 | 97
Total O&R | $252 |  | $(4) | $248 | $221 |  | $12 |  | $233
Clean Energy Businesses |  |  |  |  |  |  |  |
Renewables | 154 |  | — |  | 154 | 114 |  | — |  | 114
Energy services | 22 |  | — |  | 22 | 11 |  | — |  | 11
Other | — |  |  | 48 | 48 | — |  |  | 21 | 21
Total Clean Energy Businesses | $176 |  | $48 | $224 | $125 |  | $21 |  | $146
Con Edison Transmission | 1 |  | — |  | 1 | 1 |  | — |  | 1
Other (b) | — |  |  | (1) |  | (1) |  | — |  |  | — |  | — |
Total Con Edison | $3,602 |  | $75 | $3,677 | $3,157 |  | $77 | $3,234
(a) For the Utilities, this includes revenue from alternative revenue programs, such as the revenue decoupling mechanisms under their New York electric and gas rate plans. For the Clean Energy Businesses, this includes revenue from wholesale services. (b) Parent company and consolidation adjustments.
| 2021 | 2020
(Millions of Dollars) | Unbilled contract revenue (a) | Unearned revenue (b) |  | Unbilled contract revenue (a) | Unearned revenue (b) |
Beginning balance as of January 1, | $11 | $41 |  | $29 | $17 |
Additions (c) | 24 | — |  |  | 14 | — |  |
Subtractions (c) | 13 | 1 | (d) | 18 | 1 | (d)
Ending balance as of March 31, | $22 | $40 |  | $25 | $16 |
(a)Unbilled contract revenue represents accumulated incurred costs and earned profits on contracts (revenue arrangements), which have been recorded as revenue, but have not yet been billed to customers, and which represent contract assets as defined in Topic 606. Substantially all accrued unbilled contract revenue is expected to be collected within one year. Unbilled contract revenue arises from the cost-to-cost method of revenue recognition. Unbilled contract revenue from fixed-price type contracts is converted to billed receivables when amounts are invoiced to customers according to contractual billing terms, which generally occur when deliveries or other performance milestones are completed. (b)Unearned revenue represents a liability for billings to customers in excess of earned revenue, which are contract liabilities as defined in Topic 606. (c)Additions for unbilled contract revenue and subtractions for unearned revenue represent additional revenue earned. Additions for unearned revenue and subtractions for unbilled contract revenue represent billings. Activity also includes appropriate balance sheet classification for the period. (d)Of the subtractions from unearned revenue, $1 million was included in the balances as of January 1, 2021 and 2020. As of March 31, 2021, the aggregate amount of the remaining fixed performance obligations of the Clean Energy Businesses under contracts with customers for energy services is $312 million, of which $278 million will be recognized within the next two years, and the remaining $34 million will be recognized pursuant to long-term service and maintenance agreements. In March 2020, the Utilities began suspending new late payment charges and certain other fees for all customers. For the three months ended March 31, 2021, the estimated amount of these revenues was $18 million and $17 million for Con Edison and CECONY, respectively. The Utilities also began providing payment extensions for all customers that were scheduled to be disconnected prior to the start of the COVID-19 pandemic. In April 2021, CECONY filed a petition with the NYSPSC to timely establish a surcharge recovery mechanism for $52 million of late payment charges and fees, offset for related savings, for the year ended December 31, 2020 to begin in September 2021 and end in December 2022. The petition also requests a surcharge recovery or surcredit mechanism for any fee deferrals for 2021 and 2022 starting in January of the subsequent year over a twelve-month period, respectively. See "COVID-19 Regulatory Matters" in Note B.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 + Details
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