Business Segment Information (Segment Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,218,615			$ 3,353,532			$ 10,491,737	$ 9,020,440
Segment Financial Information
Income taxes (benefits)	184,112			158,282			(109,034)	205,808
Consolidated net income	555,882	$ 164,011	$ 279,593	535,583	$ (1,394)	$ 339,145	999,486	873,333
Assets	58,975,295						58,975,295		$ 59,454,242
Utility [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,156,616			3,191,240			10,191,041	8,461,241
Segment Financial Information
Income taxes (benefits)	178,088			159,472			(118,257)	290,566
Consolidated net income	667,162			574,399			1,166,866	1,264,933
Assets	61,784,169						61,784,169		59,733,625
Entergy Wholesale Commodities [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	62,009			162,275			300,720	559,150
Segment Financial Information
Income taxes (benefits)	18,252			8,836			46,340	(47,299)
Consolidated net income	(18,745)			26,064			76,501	(210,460)
Assets	465,865						465,865		1,242,675
All Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0			24			0	77
Segment Financial Information
Income taxes (benefits)	(12,228)			(10,026)			(37,117)	(37,459)
Consolidated net income	(37,125)			(32,982)			(113,273)	(85,445)
Assets	603,672						603,672		561,168
Eliminations
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(10)			(7)			(24)	(28)
Segment Financial Information
Income taxes (benefits)	0			0			0	0
Consolidated net income	(55,410)			$ (31,898)			(130,608)	$ (95,695)
Assets	$ (3,878,411)						$ (3,878,411)		$ (2,083,226)