Risks and Uncertainties (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Unusual Risk or Uncertainty [Line Items]
Debt Default Amount	$ 345
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,147	$ 1,114
PUERTO RICO | Covenant Violation [Member]
Unusual Risk or Uncertainty [Line Items]
Debt Default Amount	311
AES llumina [Member] | Covenant Violation [Member]
Unusual Risk or Uncertainty [Line Items]
Debt Default Amount	$ 34