Business Segment Information (Segment Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 3,395,196		$ 2,822,070		$ 6,273,122	$ 5,666,907
Segment Financial Information
Income taxes (benefits)	(359,643)		(18,416)		(293,145)	47,526
Consolidated net income	164,011	$ 279,593	(1,394)	$ 339,145	443,604	337,750
Assets	57,827,579				57,827,579		$ 59,454,242
Utility [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,306,269		2,673,385		6,034,425	5,270,000
Segment Financial Information
Income taxes (benefits)	(371,704)		71,360		(296,346)	131,094
Consolidated net income	156,548		329,936		499,704	690,535
Assets	60,525,686				60,525,686		59,733,625
Entergy Wholesale Commodities [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	88,933		148,656		238,711	396,874
Segment Financial Information
Income taxes (benefits)	25,233		(71,696)		28,089	(56,135)
Consolidated net income	87,386		(274,648)		95,245	(236,525)
Assets	528,296				528,296		1,242,675
All Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0		31		0	54
Segment Financial Information
Income taxes (benefits)	(13,172)		(18,080)		(24,888)	(27,433)
Consolidated net income	(36,672)		(24,784)		(76,148)	(52,464)
Assets	548,740				548,740		561,168
Eliminations
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(6)		(2)		(14)	(21)
Segment Financial Information
Income taxes (benefits)	0		0		0	0
Consolidated net income	(43,251)		$ (31,898)		(75,197)	$ (63,796)
Assets	$ (3,775,143)				$ (3,775,143)		$ (2,083,226)