Equity Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent			$ 506,000,000
Unfunded pension obligation, Net of Tax	$ (32,000,000)		(32,000,000)		$ (30,000,000)
Foreign currency translation adjustment, Net of Tax	(1,802,000,000)		(1,802,000,000)		(1,734,000,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,790,000,000)		(1,790,000,000)		(2,220,000,000)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			475,000,000
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	44,000,000		44,000,000		$ (456,000,000)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			31,000,000
Total foreign currency translation adjustment, net of income tax	(149,000,000)	$ 41,000,000	(17,000,000)	$ (28,000,000)
Total pension adjustments, net of income tax	0	$ 0	(1,000,000)	$ (1,000,000)
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			490,000,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			30,000,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net			520,000,000
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			1,000,000
Total pension adjustments, net of income tax			1,000,000
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(15,000,000)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Total foreign currency translation adjustment, net of income tax			(15,000,000)
Gener Subsidiary [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(76,000,000)		(76,000,000)
AES Brasil [Domain]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustment, Net of Tax	(53,000,000)		(53,000,000)
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			(20,000,000)
AES Brasil [Domain] | Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unfunded pension obligation, Net of Tax	$ (3,000,000)		$ (3,000,000)