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Debt - Non-Recourse Debt Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Feb. 28, 2017 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Debt defaults at risk of causing cross default |  | 0 |  | 0 |
Loss on extinguishment of debt |  | $ 6 | $ 12 | $ 176 | $ (5)
Proceeds from Issuance of Debt | $ 75 |  |  |  |
Nonrecourse Debt [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt |  |  |  | (6) |
Issued new debt |  | 891 |  | 891 |
Repayments of Long-term Debt |  |  |  | (337) |
Nonrecourse Debt [Member] | AES Southland [Domain] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt |  |  |  | 0 |
Issued new debt |  | 402 |  | 402 |
Repayments of Long-term Debt |  |  |  | 0 |
Nonrecourse Debt [Member] | AES Tiete [Domain] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt |  |  |  | 0 |
Issued new debt |  | 385 |  | 385 |
Repayments of Long-term Debt |  |  |  | (231) |
Nonrecourse Debt [Member] | Alto Maipo [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt |  |  |  | 0 |
Issued new debt |  | 104 |  | 104 |
Repayments of Long-term Debt |  |  |  | 0 |
Nonrecourse Debt [Member] | Andes - Generation [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt |  |  | (65) |  |
Nonrecourse Debt [Member] | DPL Subsidiary [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Loss on extinguishment of debt |  |  |  | (6) |
Issued new debt |  | $ 0 |  | 0 |
Repayments of Long-term Debt |  |  |  | $ (106) |
7.75% Senior Notes Due 2024 [Member] | Nonrecourse Debt [Member] | Andes - Generation [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issued new debt |  |  | $ 300 |  | $ 300

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- Definition debt defaults at risk of causing cross default + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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