Asset Impairment Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Asset Impairment Expense [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 1	$ 473
Other Asset Impairment Charges	1	473
Other Subsidiaries [Member]
Asset Impairment Expense [Line Items]
Impairment of Long-Lived Assets Held-for-use	1	(2)
AES Puerto Rico
Asset Impairment Expense [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 0	475
Assets Carrying Amount Disclosure Nonrecurring		73
Angamos [Member] | Long Lived Assets Held And Used [Member]
Asset Impairment Expense [Line Items]
Other Asset Impairment Charges		$ 475