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v3.8.0.1

Subsequent Events (Details) - USD ($) shares in Millions, $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 02, 2017 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Subsequent Event [Line Items] |  |  |  |  |
EP Preferred shares percentage with preference to exercise withdrawal rights |  | 2.70% |  | 2.70% |
Gain (Loss) on Disposition of Business |  | $ (1) | $ 0 | $ (49) | $ 30
EP Preferred shares with preference to exercise withdrawal rights |  | 3 |  | 3 |
Eletropaulo [Domain] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Translation Adjustment Functional to Reporting Currency, Increase (Decrease), Gross of Tax |  |  |  | $ 452 |
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits |  |  |  | $ 243 |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Kazakhstan Hydro [Member] | Subsequent Event [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Sale of Stock, Percentage of Ownership before Transaction | 100.00% |  |  |  |
Gain (Loss) on Disposition of Business | $ 37 |  |  |  |

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- Definition EP Preferred shares percentage with preference to exercise withdrawal rights + References No definition available. + Details
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- Definition EP Preferred shares with preference to exercise withdrawal rights + References No definition available. + Details
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- Definition Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment. + References No definition available. + Details
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- Definition Amount of increase (decrease) in obligation for pension and other postretirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Definition Amount of cumulative translation gain (loss), before tax, from translating foreign currency financial statements into the reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32022-110900 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900 + Details
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