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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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