Equity Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent			$ 253,000,000
Unfunded pension obligation, Net of Tax	$ (23,000,000)		(23,000,000)		$ (23,000,000)
Foreign currency translation adjustment, Net of Tax	(1,757,000,000)		(1,757,000,000)		(1,828,000,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,410,000,000)		(1,410,000,000)		(1,640,000,000)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			298,000,000
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	370,000,000		370,000,000		$ 211,000,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(45,000,000)
Total foreign currency translation adjustment, net of income tax	(44,000,000)	$ (80,000,000)	75,000,000	$ (97,000,000)
Total pension adjustments, net of income tax	0	$ (1,000,000)	(1,000,000)	$ (2,000,000)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			227,000,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(45,000,000)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net			182,000,000
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Total pension adjustments, net of income tax			0
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			71,000,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Total foreign currency translation adjustment, net of income tax			71,000,000
AES Brasil [Domain]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustment, Net of Tax	0		0
Accumulated Other Comprehensive Income (Loss), Net of Tax	(23,000,000)		(23,000,000)
AES Brasil [Domain] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net			(23,000,000)
AES Brasil [Domain] | Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unfunded pension obligation, Net of Tax	$ 0		$ 0