Fair Value (Nonrecurring Measurements) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges	$ 1	$ 473
AES Puerto Rico
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		73
Long Lived Assets Held And Used [Member] | Angamos [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges		475
Long Lived Assets Held And Used [Member] | Fair Value [Member] | Angamos [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		548
Long Lived Assets Held And Used [Member] | Fair Value [Member] | Angamos [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		0
Long Lived Assets Held And Used [Member] | Fair Value [Member] | Angamos [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		0
Long Lived Assets Held And Used [Member] | Fair Value [Member] | Angamos [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		$ 73