Debt (Subsidiary Non-Recourse Debt in Default or Accelerated) (Details) $ in Millions		Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Debt Details [Line Items]
Restricted Cash And Debt Service Reserves		$ 372	$ 627
Debt defaults at risk of causing cross default		0
Debt default amount		$ 325
Restricted Net Assets		1,200
PUERTO RICO | Covenant Violation
Debt Details [Line Items]
Debt default amount		287
Net assets		151
AES llumina [Member] | Covenant Violation
Debt Details [Line Items]
Debt default amount		33
Net assets		19
Jordan [Member] | Covenant Violation
Debt Details [Line Items]
Debt default amount	[1]	5
Net assets	[1]	$ 4

[1] Classified as current held-for-sale liability on the Consolidated Balance Sheets.