Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 76,536	$ 312,299
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	(3,668)	2,027
Other Comprehensive Income (Loss), Net of Tax, Total	(3,668)	2,027
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	72,868	314,326
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	1,255	1,364
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	71,613	312,962
Entergy Louisiana [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	182,723	244,024
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	(2,024)	(786)
Other Comprehensive Income (Loss), Net of Tax, Total	(2,024)	(786)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	180,699	243,238
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	795	554
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	179,904	242,684
Entergy Arkansas [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(32,280)	59,397
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	(1,818)	(1,629)
System Energy [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 31,118	$ 27,545