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Debt (Tables) | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Schedule of Non-recourse debt [Table Text Block] | During the year ended December 31, 2017, the Company's subsidiaries had the following significant debt transactions:
Subsidiary |  | Issuances |  | Repayments |  | Gain (Loss) on Extinguishment of Debt
IPALCO |  | $ | 608 |  |  | $ | (528 | ) |  | $ | (9 | )
Tietê |  | 585 |  |  | (293 | ) |  | (5 | )
Southland |  | 557 |  |  | — |  |  | — |
Gener |  | 335 |  |  | (426 | ) |  | (20 | )
AES Argentina |  | 310 |  |  | (181 | ) |  | 65 |
Los Mina |  | 303 |  |  | (275 | ) |  | (4 | )
Colon |  | 262 |  |  | — |  |  | — |
Masinloc |  | 160 |  |  | (51 | ) |  | — |
DPL |  | 103 |  |  | (249 | ) |  | (3 | )
Other |  | 285 |  |  | (547 | ) |  | (1 | )
Total |  | $ | 3,508 |  |  | $ | (2,550 | ) |  | $ | 23 |
Carrying Amount and Terms of Non-Recourse Debt | The following table summarizes the carrying amount and terms of non-recourse debt at our subsidiaries as of the periods indicated (in millions):
NON-RECOURSE DEBT | Weighted Average Interest Rate |  | Maturity |  | December 31,
2017 |  | 2016
Variable Rate: (1) |  |  |  |  |  |  |
Bank loans | 4.52% |  | 2018 – 2050 |  | $ | 2,488 |  |  | $ | 2,601 |
Notes and bonds | 8.06% |  | 2020 – 2026 |  | 900 |  |  | 471 |
Debt to (or guaranteed by) multilateral, export credit agencies or development banks (2) | 3.28% |  | 2023 – 2034 |  | 3,668 |  |  | 3,189 |
Fixed Rate: |  |  |  |  |  |  |
Bank loans | 4.54% |  | 2018 – 2040 |  | 993 |  |  | 767 |
Notes and bonds | 5.68% |  | 2019 – 2073 |  | 7,388 |  |  | 7,822 |
Debt to (or guaranteed by) multilateral, export credit agencies or development banks (2) | 5.35% |  | 2023 – 2034 |  | 271 |  |  | 328 |
Other | 5.81% |  | 2018 – 2061 |  | 26 |  |  | 30 |
Unamortized (discount) premium & debt issuance (costs), net |  |  |  |  | (394 | ) |  | (425 | )
Subtotal |  |  |  |  | $ | 15,340 |  |  | $ | 14,783 |
Less: Current maturities |  |  |  |  | (2,164 | ) |  | (1,052 | )
Noncurrent maturities |  |  |  |  | $ | 13,176 |  |  | $ | 13,731 |
_____________________________
(1) | The interest rate on variable rate debt represents the total of a variable component that is based on changes in an interest rate index and of a fixed component. The Company has interest rate swaps and option agreements in an aggregate notional principal amount of approximately $3.6 billion on non-recourse debt outstanding at December 31, 2017. These agreements economically fix the variable component of the interest rates on the portion of the variable-rate debt being hedged so that the total interest rate on that debt has been fixed at rates ranging from approximately 2.49% to 8.00%. The debt agreements expire at various dates from 2018 through 2073.
(2) | Multilateral loans include loans funded and guaranteed by bilaterals, multilaterals, development banks and other similar institutions.
Schedule For Maturity For Non-Recourse Debt | Non-recourse debt as of December 31, 2017 is scheduled to reach maturity as shown below (in millions):
December 31, | Annual Maturities
2018 | $ | 2,245 |
2019 | 796 |
2020 | 1,396 |
2021 | 1,833 |
2022 | 1,768 |
Thereafter | 7,696 |
Unamortized (discount) premium & debt issuance (costs), net | (394 | )
Total | $ | 15,340 |
Debt In Default Table | The following table summarizes the Company's subsidiary non-recourse debt in default (in millions) as of December 31, 2017. Due to the defaults, these amounts are included in the current portion of non-recourse debt:
| Primary Nature of Default |  | December 31, 2017
Subsidiary | Default |  | Net Assets
Alto Maipo (Chile) | Covenant |  | $ | 618 |  |  | $ | 352 |
AES Puerto Rico | Covenant/Payment |  | 365 |  |  | 692 |
AES Ilumina | Covenant |  | 36 |  |  | 54 |
Total |  |  | $ | 1,019 |  |  |
Schedule of Recourse Debt Detail | The following table summarizes the carrying amount and terms of recourse debt of the Company as of the periods indicated (in millions):
| Interest Rate |  | Final Maturity |  | December 31, 2017 |  | December 31, 2016
Senior Unsecured Note | LIBOR + 3.00% |  | 2019 |  | $ | — |  |  | $ | 240 |
Senior Unsecured Note | 8.00% |  | 2020 |  | 228 |  |  | 469 |
Senior Unsecured Note | 7.38% |  | 2021 |  | 690 |  |  | 966 |
Drawings on secured credit facility | LIBOR + 2.00% |  | 2021 |  | 207 |  |  | — |
Senior Secured Term Loan | LIBOR + 2.00% |  | 2022 |  | 521 |  |  | — |
Senior Unsecured Note | 4.88% |  | 2023 |  | 713 |  |  | 713 |
Senior Unsecured Note | 5.50% |  | 2024 |  | 738 |  |  | 738 |
Senior Unsecured Note | 5.50% |  | 2025 |  | 573 |  |  | 573 |
Senior Unsecured Note | 6.00% |  | 2026 |  | 500 |  |  | 500 |
Senior Unsecured Note | 5.13% |  | 2027 |  | 500 |  |  | — |
Term Convertible Trust Securities | 6.75% |  | 2029 |  | — |  |  | 517 |
Unamortized (discount) premium & debt issuance (costs), net |  |  |  |  | (40 | ) |  | (45 | )
Subtotal |  |  |  |  | $ | 4,630 |  |  | $ | 4,671 |
Less: Current maturities |  |  |  |  | (5 | ) |  | — |
Noncurrent maturities |  |  |  |  | $ | 4,625 |  |  | $ | 4,671 |
|  |  |  |  |  | December 31,
|  | Interest Rate |  | Maturity |  | 2017 |  | 2016
Senior Unsecured Note |  | LIBOR + 3.00% |  | 2019 |  | $ | — |  |  | $ | 240 |
Senior Unsecured Note |  | 8.00% |  | 2020 |  | 228 |  |  | 469 |
Senior Unsecured Note |  | 7.38% |  | 2021 |  | 690 |  |  | 966 |
Drawings on secured credit facility |  | LIBOR + 2.00% |  | 2021 |  | 207 |  |  | — |
Senior Secured Term Loan |  | LIBOR + 2.00% |  | 2022 |  | 521 |  |  | — |
Senior Unsecured Note |  | 4.88% |  | 2023 |  | 713 |  |  | 713 |
Senior Unsecured Note |  | 5.50% |  | 2024 |  | 738 |  |  | 738 |
Senior Unsecured Note |  | 5.50% |  | 2025 |  | 573 |  |  | 573 |
Senior Unsecured Note |  | 6.00% |  | 2026 |  | 500 |  |  | 500 |
Senior Unsecured Note |  | 5.13% |  | 2027 |  | 500 |  |  | — |
Unamortized (discounts)/premiums & debt issuance (costs) |  |  |  |  |  | (40 | ) |  | (45 | )
Subtotal |  |  |  |  |  | $ | 4,630 |  |  | $ | 4,154 |
Less: Current maturities |  |  |  |  |  | (5 | ) |  | — |
Total |  |  |  |  |  | $ | 4,625 |  |  | $ | 4,154 |
Schedule of Future Maturities of Recourse Debt | The following table summarizes the principal amounts due under our recourse debt for the next five years and thereafter (in millions):
December 31, | Net Principal Amounts Due
2018 | $ | 5 |
2019 | 5 |
2020 | 234 |
2021 | 902 |
2022 | 500 |
Thereafter | 3,024 |
Unamortized (discount) premium & debt issuance (costs), net | (40 | )
Total recourse debt | $ | 4,630 |
As of December 31, 2017 scheduled maturities are presented in the following table (in millions):
December 31, | Annual Maturities
2018 | $ | 5 |
2019 | 5 |
2020 | 234 |
2021 | 902 |
2022 | 500 |
Thereafter | 3,024 |
Unamortized (discount)/premium & debt issuance (costs) | (40 | )
Total debt | $ | 4,630 |

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