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Subsequent Events Subsequent Events (Notes)	6 Months Ended
Subsequent Events Subsequent Events (Notes)	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENTS Simple Energy — On July 1, 2019, the Company completed the merger of Simple Energy with Tendril to form Uplight, a new company that offers a comprehensive platform for utility customer engagement. AES contributed $53 million in cash and its interest in Simple Energy to the merger. As the Company does not control Uplight, it will be accounted for as an equity method investment and reported as part of Corporate and Other.