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Debt (Non-Recourse Debt Maturity Schedule) (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Details [Line Items] |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | $ (318) | $ (368)
Non Recourse Debt Total |  | 16,712 |
Nonrecourse Debt [Member] |  |  |
Debt Details [Line Items] |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Two |  | 1,648 |
Long-term Debt, Maturities, Repayments of Principal in Year Three |  | 999 |
Long-term Debt, Maturities, Repayments of Principal in Year Four |  | 1,125 |
Long-term Debt, Maturities, Repayments of Principal in Year Five |  | 1,180 |
Long-term Debt, Maturities, Repayments of Principal after Year Five |  | 10,195 |
Nonrecourse Debt [Member] |  |  |
Debt Details [Line Items] |  |  |
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months |  | 1,883 |
AES Southland [Domain] | Nonrecourse Debt [Member] |  |  |
Debt Details [Line Items] |  |  |
Debt Instrument, Face Amount | [1] | $ 930 |
[1] | Issuances relate to the June 2017 long-term non-recourse debt financing to fund the Southland re-powering construction projects, a non-recourse bridge loan in September 2019, and long-term non-recourse debt financing issued in December 2019 to settle the bridge loan.

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