Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 233	$ 777
Foreign currency translation activity:
Foreign currency translation adjustments, net of $0 income tax for all periods	(1)	25
Reclassification to earnings, net of $0 income tax for all periods	0	(16)
Total foreign currency translation adjustments	(1)	9
Derivative activity:
Change in derivative fair value, net of income tax benefit (expense) of $18 and $(15), respectively	(68)	57
Reclassification to earnings, net of income tax benefit (expense) of $(2) and $1, respectively	10	10
Total change in fair value of derivatives	(58)	67
Pension activity:
Reclassification to earnings, net of $0 income tax for all periods	1	2
Total pension adjustments	1	2
OTHER COMPREHENSIVE INCOME (LOSS)	(58)	78
COMPREHENSIVE INCOME	175	855
Less: Comprehensive income attributable to noncontrolling interests and redeemable stock of subsidiaries	(53)	(122)
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE AES CORPORATION	$ 122	$ 733