Equity (Reclassification out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,877,925	$ 2,844,838
Other Nonoperating Income (Expense)	7,603	(60,929)
Income taxes (benefits)	(66,497)	(65,942)
Consolidated net income	279,593	339,145
Competitive Businesses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	149,788	248,250
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Consolidated net income	(11,839)	7,481
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Nonoperating Income (Expense)	(48)	(48)
INCOME (LOSS) BEFORE INCOME TAXES	(48)	39,319
Income taxes (benefits)	10	(8,257)
Consolidated net income	(38)	31,062
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Competitive Businesses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	39,367
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income taxes (benefits)	2,022	358
Consolidated net income	(3,473)	(614)
Realized Investment Gains (Losses)	(5,495)	(972)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior-service credit	3,837	5,248
Amortization of loss	(13,925)	(34,529)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	(782)	0
INCOME (LOSS) BEFORE INCOME TAXES	(10,870)	(29,281)
Income taxes (benefits)	2,542	6,314
Consolidated net income	(8,328)	(22,967)
Entergy Louisiana [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,265,972	1,107,644
Other Nonoperating Income (Expense)	15,517	(34,638)
Income taxes (benefits)	(30,789)	(37,772)
Consolidated net income	150,860	166,626
Entergy Louisiana [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of prior-service credit	1,158	1,230
Amortization of loss	(319)	(679)
INCOME (LOSS) BEFORE INCOME TAXES	839	551
Income taxes (benefits)	(226)	(144)
Consolidated net income	$ 613	$ 407