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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2021
Revenue from Contracts with Customers [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table presents our revenue from contracts with customers and other revenue for the periods indicated (in millions):
| Three Months Ended September 30, 2021
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 760 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 760 |
Other regulated revenue | 9 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 9 |
Total regulated revenue | 769 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 769 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 394 |  |  | 893 |  |  | 534 |  |  | 197 |  |  | (3) |  |  | 2,015 |
Other non-regulated revenue (1) | 164 |  |  | 3 |  |  | 25 |  |  | 60 |  |  | — |  |  | 252 |
Total non-regulated revenue | 558 |  |  | 896 |  |  | 559 |  |  | 257 |  |  | (3) |  |  | 2,267 |
Total revenue | $ | 1,327 |  |  | $ | 896 |  |  | $ | 559 |  |  | $ | 257 |  |  | $ | (3) |  |  | $ | 3,036 |
| Three Months Ended September 30, 2020
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 674 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 674 |
Other regulated revenue | 6 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 6 |
Total regulated revenue | 680 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 680 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 378 |  |  | 848 |  |  | 417 |  |  | 134 |  |  | (3) |  |  | 1,774 |
Other non-regulated revenue (1) | 3 |  |  | 2 |  |  | 25 |  |  | 61 |  |  | — |  |  | 91 |
Total non-regulated revenue | 381 |  |  | 850 |  |  | 442 |  |  | 195 |  |  | (3) |  |  | 1,865 |
Total revenue | $ | 1,061 |  |  | $ | 850 |  |  | $ | 442 |  |  | $ | 195 |  |  | $ | (3) |  |  | $ | 2,545 |
| Nine Months Ended September 30, 2021
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 2,117 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,117 |
Other regulated revenue | 30 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 30 |
Total regulated revenue | 2,147 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,147 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 850 |  |  | 2,735 |  |  | 1,509 |  |  | 621 |  |  | (9) |  |  | 5,706 |
Other non-regulated revenue (1) | 251 |  |  | 9 |  |  | 75 |  |  | 183 |  |  | — |  |  | 518 |
Total non-regulated revenue | 1,101 |  |  | 2,744 |  |  | 1,584 |  |  | 804 |  |  | (9) |  |  | 6,224 |
Total revenue | $ | 3,248 |  |  | $ | 2,744 |  |  | $ | 1,584 |  |  | $ | 804 |  |  | $ | (9) |  |  | $ | 8,371 |
| Nine Months Ended September 30, 2020
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 1,987 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,987 |
Other regulated revenue | 29 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 29 |
Total regulated revenue | 2,016 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,016 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 742 |  |  | 2,267 |  |  | 1,181 |  |  | 461 |  |  | (7) |  |  | 4,644 |
Other non-regulated revenue (1) | 187 |  |  | 6 |  |  | 74 |  |  | 173 |  |  | — |  |  | 440 |
Total non-regulated revenue | 929 |  |  | 2,273 |  |  | 1,255 |  |  | 634 |  |  | (7) |  |  | 5,084 |
Total revenue | $ | 2,945 |  |  | $ | 2,273 |  |  | $ | 1,255 |  |  | $ | 634 |  |  | $ | (7) |  |  | $ | 7,100 |
_______________________________ (1) Other non-regulated revenue primarily includes lease and derivative revenue not accounted for under ASC 606.

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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