Debt - Subsidiary Non-recourse Debt in Default or Accelerated (Details) $ in Millions	Sep. 30, 2020 USD ($)
Nonrecourse Debt Default [Line Items]
Materiality threshold for cash distribution from business to Parent	20.00%
Debt defaults at risk of causing cross default	0
Debt Default Amount	$ 296
Covenant Violation [Member] | PUERTO RICO
Nonrecourse Debt Default [Line Items]
Net Assets	263
Debt Default Amount	258
Covenant Violation [Member] | AES llumina [Member]
Nonrecourse Debt Default [Line Items]
Net Assets	26
Debt Default Amount	31
Covenant Violation [Member] | JORDAN
Nonrecourse Debt Default [Line Items]
Net Assets	2	[1]
Debt Default Amount	$ 7	[1]

[1] Subsidiary Primary Nature of DefaultDebt in DefaultNet AssetsAES Puerto RicoCovenant$258 $263 AES Ilumina (Puerto Rico)Covenant31 26 AES Jordan SolarCovenant7 2 Total$296