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Financial Statement Presentation New Accounting Pronouncement Adopted (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jan. 01, 2018 | Dec. 31, 2017 | Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Total Revenue | $ 2,537 | $ 2,613 | $ 5,277 | $ 5,194 |  |  |
Cost of Goods and Services Sold | (1,937) | (1,990) | (4,021) | (4,014) |  |  |
Operating margin | 600 | 623 | 1,256 | 1,180 |  |  |
Interest income | 76 | 59 | 152 | 122 |  |  |
INCOME FROM CONTINUING OPERATIONS BEFORE TAXES AND EQUITY IN EARNINGS OF AFFILIATES | 342 | 226 | 1,340 | 383 |  |  |
Income tax expense | 132 | 86 | 363 | 153 |  |  |
INCOME FROM CONTINUING OPERATIONS | 224 | 142 | 1,002 | 239 |  |  |
NET INCOME | 416 | 150 | 1,193 | 248 |  |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION | 290 | 53 | 974 | 29 |  |  |
Other current assets | 682 |  | 682 |  | $ 691 | $ 630 |
Deferred income taxes | 83 |  | 83 |  | 106 | 130 |
Service concession assets, net | 0 |  | 0 |  | 0 | 1,360 |
Loan receivable | 1,458 |  | 1,458 |  | 1,490 | 0 |
TOTAL ASSETS | 32,597 |  | 32,597 |  |  | 33,112 |
Accrued and other liabilities | 1,036 |  | 1,036 |  |  | 1,232 |
Accumulated deficit | (1,234) |  | (1,234) |  | (2,209) | (2,276) |
Accumulated other comprehensive loss | (1,988) |  | (1,988) |  | (1,857) | (1,876) |
NONCONTROLLING INTERESTS | 2,348 |  | 2,348 |  | 2,461 | 2,380 |
TOTAL LIABILITIES AND EQUITY | 32,597 |  | 32,597 |  |  | 33,112 |
Cash and Cash Equivalents, at Carrying Value | (1,140) |  | (1,140) |  |  | (949) |
Restricted Cash and Cash Equivalents, Current | (379) |  | (379) |  |  | (274) |
Other Restricted Assets, Noncurrent | (623) |  | (623) |  |  | (565) |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 2,142 | 1,881 | 2,142 | 1,881 |  | $ 1,788 | $ 1,960
ASC 606 Impact [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Total Revenue | (25) |  | (36) |  |  |  |
Cost of Goods and Services Sold | 20 |  | 26 |  |  |  |
Operating margin | (5) |  | (10) |  |  |  |
Interest income | 15 |  | 30 |  |  |  |
INCOME FROM CONTINUING OPERATIONS BEFORE TAXES AND EQUITY IN EARNINGS OF AFFILIATES | 10 |  | 20 |  |  |  |
Income tax expense | 0 |  | (1) |  |  |  |
INCOME FROM CONTINUING OPERATIONS | 10 |  | 19 |  |  |  |
NET INCOME | 10 |  | 19 |  |  |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION | 10 |  | 19 |  |  |  |
Other current assets | 64 |  | 64 |  | 61 |  |
Deferred income taxes | (24) |  | (24) |  | (24) |  |
Service concession assets, net | (1,313) |  | (1,313) |  | (1,360) |  |
Loan receivable | 1,458 |  | 1,458 |  | 1,490 |  |
TOTAL ASSETS | 185 |  | 185 |  |  |  |
Accrued and other liabilities | 2 |  | 2 |  |  |  |
Accumulated deficit | 86 |  | 86 |  | 67 |  |
Accumulated other comprehensive loss | 18 |  | 18 |  | 19 |  |
NONCONTROLLING INTERESTS | 79 |  | 79 |  | $ 81 |  |
TOTAL LIABILITIES AND EQUITY | 185 |  | 185 |  |  |  |
Balance Without the Adoption of ASC 606 [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
Total Revenue | 2,562 |  | 5,313 |  |  |  |
Cost of Goods and Services Sold | (1,957) |  | (4,047) |  |  |  |
Operating margin | 605 |  | 1,266 |  |  |  |
Interest income | 61 |  | 122 |  |  |  |
INCOME FROM CONTINUING OPERATIONS BEFORE TAXES AND EQUITY IN EARNINGS OF AFFILIATES | 332 |  | 1,320 |  |  |  |
Income tax expense | (132) |  | (362) |  |  |  |
INCOME FROM CONTINUING OPERATIONS | 214 |  | 983 |  |  |  |
NET INCOME | 406 |  | 1,174 |  |  |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION | 280 |  | 955 |  |  |  |
Other current assets | 618 |  | 618 |  |  |  |
Deferred income taxes | 107 |  | 107 |  |  |  |
Service concession assets, net | 1,313 |  | 1,313 |  |  |  |
Loan receivable | 0 |  | 0 |  |  |  |
TOTAL ASSETS | 32,412 |  | 32,412 |  |  |  |
Accrued and other liabilities | 1,034 |  | 1,034 |  |  |  |
Accumulated deficit | (1,320) |  | (1,320) |  |  |  |
Accumulated other comprehensive loss | (2,006) |  | (2,006) |  |  |  |
NONCONTROLLING INTERESTS | 2,269 |  | 2,269 |  |  |  |
TOTAL LIABILITIES AND EQUITY | $ 32,412 |  | $ 32,412 |  |  |  |
Accounting Standard Update 2016-09 [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets |  | 12 |  | 12 |  |  |
Inc (Dec) in Cash provided by Operating Actitvities [Domain] | Accounting Standard Update 2016-09 [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets |  | 8 |  | 8 |  |  |
Dec (Inc) In Net Cash Used by Financing Activities [Domain] | Accounting Standard Update 2016-09 [Member] |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets |  | $ 0 |  | $ 0 |  |  |

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