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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2019
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, 2019
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 788 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 788 |
Other regulated revenue | 11 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 11 |
Total regulated revenue | 799 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 799 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 245 |  |  | 822 |  |  | 447 |  |  | 141 |  |  | (1 | ) |  | 1,654 |
Other non-regulated revenue (1) | 86 |  |  | 6 |  |  | 23 |  |  | 56 |  |  | 1 |  |  | 172 |
Total non-regulated revenue | 331 |  |  | 828 |  |  | 470 |  |  | 197 |  |  | — |  |  | 1,826 |
Total revenue | $ | 1,130 |  |  | $ | 828 |  |  | $ | 470 |  |  | $ | 197 |  |  | $ | — |  |  | $ | 2,625 |
| Three Months Ended September 30, 2018
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 759 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 759 |
Other regulated revenue | 18 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 18 |
Total regulated revenue | 777 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 777 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 386 |  |  | 922 |  |  | 440 |  |  | 152 |  |  | (2 | ) |  | 1,898 |
Other non-regulated revenue (1) | 67 |  |  | 1 |  |  | 22 |  |  | 72 |  |  | — |  |  | 162 |
Total non-regulated revenue | 453 |  |  | 923 |  |  | 462 |  |  | 224 |  |  | (2 | ) |  | 2,060 |
Total revenue | $ | 1,230 |  |  | $ | 923 |  |  | $ | 462 |  |  | $ | 224 |  |  | $ | (2 | ) |  | $ | 2,837 |
| Nine Months Ended September 30, 2019
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 2,272 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,272 |
Other regulated revenue | 36 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 36 |
Total regulated revenue | 2,308 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,308 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 598 |  |  | 2,429 |  |  | 1,331 |  |  | 609 |  |  | (3 | ) |  | 4,964 |
Other non-regulated revenue (1) | 219 |  |  | 9 |  |  | 67 |  |  | 192 |  |  | (1 | ) |  | 486 |
Total non-regulated revenue | 817 |  |  | 2,438 |  |  | 1,398 |  |  | 801 |  |  | (4 | ) |  | 5,450 |
Total revenue | $ | 3,125 |  |  | $ | 2,438 |  |  | $ | 1,398 |  |  | $ | 801 |  |  | $ | (4 | ) |  | $ | 7,758 |
| Nine Months Ended September 30, 2018
| US and Utilities SBU |  | South America SBU |  | MCAC SBU |  | Eurasia SBU |  | Corporate, Other and Eliminations |  | Total
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 2,176 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,176 |
Other regulated revenue | 39 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 39 |
Total regulated revenue | 2,215 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,215 |
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | 774 |  |  | 2,661 |  |  | 1,211 |  |  | 701 |  |  | (11 | ) |  | 5,336 |
Other non-regulated revenue (1) | 263 |  |  | 3 |  |  | 65 |  |  | 234 |  |  | (2 | ) |  | 563 |
Total non-regulated revenue | 1,037 |  |  | 2,664 |  |  | 1,276 |  |  | 935 |  |  | (13 | ) |  | 5,899 |
Total revenue | $ | 3,252 |  |  | $ | 2,664 |  |  | $ | 1,276 |  |  | $ | 935 |  |  | $ | (13 | ) |  | $ | 8,114 |

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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=118956577&loc=SL49130545-203045 + Details
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