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Segments (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) segment | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of strategic business units | segment | 6 |  |
Number of reportable segments | segment | 6 |  |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | $ 190 | $ 185 |
Reconciliation To Income From Continuing Operations Before Taxes |  |  |
Unrealized derivative gains | (1) | (34) |
Unrealized foreign currency transaction gains | (9) | (9) |
Disposition/acquisition (gains) losses | 52 | (19) |
Impairment losses | 168 | 50 |
Gains on extinguishment of debt | (16) | 1 |
Pretax contribution | (4) | 196 |
Net equity in earnings of affiliates | 7 | 6 |
Less: Income (loss) from continuing operations before taxes, attributable to noncontrolling interests | 171 | (17) |
Income from continuing operations before taxes and equity in earnings of affiliates | 160 | 173 |
Assets |  |  |
Total Assets | 36,508 |  | $ 36,119
Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 3,492 | 3,271 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | 190 | 185 |
Intersegment Eliminations [Member] |  |  |
Revenue |  |  |
Total Revenue | (2) | (5) |
UNITED STATES |  |  |
Assets |  |  |
Total Assets | 9,229 |  | 9,333
UNITED STATES | Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 808 | 855 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | 48 | 85 |
Andes - Generation [Member] |  |  |
Assets |  |  |
Total Assets | 9,349 |  | 8,971
Andes - Generation [Member] | Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 618 | 622 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | 88 | 61 |
BRAZIL |  |  |
Assets |  |  |
Total Assets | 6,405 |  | 6,448
BRAZIL | Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 1,039 | 839 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | 39 | 5 |
MCAC - Generation [Member] |  |  |
Assets |  |  |
Total Assets | 5,355 |  | 5,162
MCAC - Generation [Member] | Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 586 | 519 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | 59 | 48 |
Europe [Member] |  |  |
Assets |  |  |
Total Assets | 2,506 |  | 2,664
Europe [Member] | Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 237 | 246 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | 55 | 69 |
Asia [Member] |  |  |
Assets |  |  |
Total Assets | 3,290 |  | 3,113
Asia [Member] | Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 192 | 194 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | 22 | 22 |
Corporate Other And Other Eliminations [Member] |  |  |
Assets |  |  |
Total Assets | 350 |  | 428
Corporate Other And Other Eliminations [Member] | Operating Segments [Member] |  |  |
Revenue |  |  |
Total Revenue | 14 | 1 |
Adjusted PTC |  |  |
Adjusted Pretax Contribution | (121) | $ (105) |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |
Assets |  |  |
Total Assets | $ 24 |  | $ 0

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