Asset Impairment Expense (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Asset Impairment Expense [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 174		$ 482	$ 194	$ 483
Other Asset Impairment Charges	174		482	194	483
Other Subsidiaries [Member]
Asset Impairment Expense [Line Items]
Impairment of Long-Lived Assets Held-for-use	4		7	10	8
Maritza | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			927		927
Maritza | Long Lived Assets Held And Used [Member]
Asset Impairment Expense [Line Items]
Other Asset Impairment Charges	0		475	0	475
Maritza | Long Lived Assets Held And Used [Member] | Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			452		452
Jordan (IPP1 & IPP4) | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	179	$ 179		179
Jordan (IPP1 & IPP4) | Long Lived Assets Held And Used [Member]
Asset Impairment Expense [Line Items]
Other Asset Impairment Charges	15	14	0	29	0
Jordan (IPP1 & IPP4) | Long Lived Assets Held And Used [Member] | Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	0	$ 0		0
AES Renewable Holdings | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	29			29
AES Renewable Holdings | Long Lived Assets Held And Used [Member]
Asset Impairment Expense [Line Items]
Other Asset Impairment Charges	18		0	18	0
AES Renewable Holdings | Long Lived Assets Held And Used [Member] | Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	11			11
Norgener | Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	196			196
Norgener | Long Lived Assets Held And Used [Member]
Asset Impairment Expense [Line Items]
Other Asset Impairment Charges	137		$ 0	137	$ 0
Norgener | Long Lived Assets Held And Used [Member] | Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Asset Impairment Expense [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	$ 24			$ 24