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Revenue (Notes) | 12 Months Ended
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Dec. 31, 2020
Revenue [Abstract] |
Revenue from Contract with Customer [Text Block] | REVENUE The following table presents our revenue from contracts with customers and other revenue for the periods indicated (in millions):
| Year Ended December 31, 2020
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 2,626 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,626 |
Other regulated revenue | 35 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 35 |
Total regulated revenue | 2,661 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,661 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 1,015 |  |  | 3,151 |  |  | 1,668 |  |  | 594 |  |  | (10) |  |  | 6,418 |
Other non-regulated revenue (1) | 242 |  |  | 8 |  |  | 98 |  |  | 234 |  |  | (1) |  |  | 581 |
Total non-regulated revenue | 1,257 |  |  | 3,159 |  |  | $ | 1,766 |  |  | 828 |  |  | (11) |  |  | 6,999 |
Total revenue | $ | 3,918 |  |  | $ | 3,159 |  |  | $ | 1,766 |  |  | $ | 828 |  |  | $ | (11) |  |  | $ | 9,660 |
| Year Ended December 31, 2019
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 2,979 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,979 |
Other regulated revenue | 49 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 49 |
Total regulated revenue | 3,028 |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | 3,028 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 767 |  |  | 3,205 |  |  | 1,788 |  |  | $ | 799 |  |  | (4) |  |  | $ | 6,555 |
Other non-regulated revenue (1) | 263 |  |  | 3 |  |  | 94 |  |  | 248 |  |  | (2) |  |  | 606 |
Total non-regulated revenue | 1,030 |  |  | $ | 3,208 |  |  | 1,882 |  |  | $ | 1,047 |  |  | (6) |  |  | $ | 7,161 |
Total revenue | $ | 4,058 |  |  | $ | 3,208 |  |  | $ | 1,882 |  |  | $ | 1,047 |  |  | $ | (6) |  |  | $ | 10,189 |
| Year Ended December 31, 2018
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 2,885 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,885 |
Other regulated revenue | 54 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 54 |
Total regulated revenue | 2,939 |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | 2,939 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 972 |  |  | 3,529 |  |  | 1,642 |  |  | $ | 943 |  |  | (11) |  |  | $ | 7,075 |
Other non-regulated revenue (1) | 319 |  |  | 4 |  |  | 86 |  |  | 312 |  |  | 1 |  |  | 722 |
Total non-regulated revenue | 1,291 |  |  | $ | 3,533 |  |  | 1,728 |  |  | $ | 1,255 |  |  | (10) |  |  | $ | 7,797 |
Total revenue | $ | 4,230 |  |  | $ | 3,533 |  |  | $ | 1,728 |  |  | $ | 1,255 |  |  | $ | (10) |  |  | $ | 10,736 |
_____________________________ (1)Other non-regulated revenue primarily includes lease and derivative revenue not accounted for under ASC 606. Contract Balances — The timing of revenue recognition, billings, and cash collections results in accounts receivable and contract liabilities. The contract liabilities from contracts with customers were $531 million and $117 million as of December 31, 2020 and December 31, 2019, respectively. During the years ended December 31, 2020 and 2019, we recognized revenue of $14 million and $13 million, respectively, that was included in the corresponding contract liability balance at the beginning of the periods. In August 2020, AES Gener reached an agreement with Minera Escondida and Minera Spence to early terminate two PPAs of the Angamos coal-fired plant in Chile, further accelerating AES Gener's decarbonization strategy. As a result of the termination payment, Angamos recognized a contract liability of $655 million, of which $55 million will be derecognized each month through the end of the remaining performance obligation in August 2021. As of December 31, 2020, the remaining contract liability is $383 million. A significant financing arrangement exists for our Mong Duong plant in Vietnam. The plant was constructed under a BOT contract and will be transferred to the Vietnamese government after the completion of a 25 year PPA. The performance obligation to construct the facility was substantially completed in 2015. Approximately $1.4 billion of contract consideration related to the construction, but not yet collected through the 25 year PPA, was reflected as a loan receivable as of December 31, 2019. As of December 31, 2020, Mong Duong met the held-for-sale criteria and the loan receivable balance of $1.3 billion, net of CECL reserve of $32 million, was reclassified to held-for-sale assets. Of the loan receivable balance, $80 million was classified as Current held-for-sale assets and $1.2 billion was classified as Noncurrent held-for-sale assets on the Consolidated Balance Sheet. Remaining Performance Obligations — The transaction price allocated to remaining performance obligations represents future consideration for unsatisfied (or partially unsatisfied) performance obligations at the end of the reporting period. As of December 31, 2020, the aggregate amount of transaction price allocated to remaining performance obligations was $11 million, primarily consisting of fixed consideration for the sale of renewable energy credits in long-term contracts in the U.S. We expect to recognize revenue on approximately one-fifth of the remaining performance obligations in 2021 and 2022, with the remainder recognized thereafter.

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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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