Business Segment Information (Segment Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,877,925	$ 2,844,838
Segment Financial Information
Income taxes (benefits)	66,497	65,942
Consolidated net income	279,593	339,145
Assets	59,833,526		$ 59,454,242
Utility [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,728,156	2,596,616
Segment Financial Information
Income taxes (benefits)	75,359	59,734
Consolidated net income	343,156	360,600
Assets	61,684,609		59,733,625
Entergy Wholesale Commodities [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	149,777	248,219
Segment Financial Information
Income taxes (benefits)	2,854	15,560
Consolidated net income	7,859	38,124
Assets	1,137,843		1,242,675
All Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	23
Segment Financial Information
Income taxes (benefits)	(11,716)	(9,352)
Consolidated net income	(39,476)	(27,680)
Assets	601,479		561,168
Eliminations
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(8)	(20)
Segment Financial Information
Income taxes (benefits)	0	0
Consolidated net income	(31,946)	$ (31,899)
Assets	$ (3,590,405)		$ (2,083,226)