Long-Term Debt (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended			12 Months Ended
	Jan. 31, 2022	May 31, 2015	Sep. 30, 2009	Dec. 31, 2024	Dec. 31, 2022	Apr. 30, 2022	Jul. 31, 2015	Nov. 30, 2009	Dec. 31, 1988
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One				$ 1,379,140
Long-Term Debt, Maturity, Year Two				2,375,720
Long-Term Debt, Maturity, Year Three				1,043,520
Long-Term Debt, Maturity, Year Four				2,177,293
Long-Term Debt, Maturity, Year Five				405,720
System Energy [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One				200,000
Long-Term Debt, Maturity, Year Two				0
Long-Term Debt, Maturity, Year Three				162,700
Long-Term Debt, Maturity, Year Four				325,000
Long-Term Debt, Maturity, Year Five				0
Entergy Arkansas [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One				0
Long-Term Debt, Maturity, Year Two				690,000
Long-Term Debt, Maturity, Year Three				22,500
Long-Term Debt, Maturity, Year Four				350,000
Long-Term Debt, Maturity, Year Five				70,000
Entergy Louisiana [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One				300,000
Long-Term Debt, Maturity, Year Two				720,000
Long-Term Debt, Maturity, Year Three				557,600
Long-Term Debt, Maturity, Year Four				425,000
Long-Term Debt, Maturity, Year Five				0
Entergy New Orleans [Member]
Debt Instrument [Line Items]
Up front financing costs associated with securitization		$ 3,000
Amount of Hurricane Issac storm cost to be recovered through securitization		31,800
Replenishment amount for storm reserve spending		$ 63,900
Long-Term Debt, Maturity, Year One				79,140
Long-Term Debt, Maturity, Year Two				85,720
Long-Term Debt, Maturity, Year Three				720
Long-Term Debt, Maturity, Year Four				719
Long-Term Debt, Maturity, Year Five				35,720
Entergy Texas [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One				0
Long-Term Debt, Maturity, Year Two				130,000
Long-Term Debt, Maturity, Year Three				150,000
Long-Term Debt, Maturity, Year Four				51,574
Long-Term Debt, Maturity, Year Five				300,000
Hurricane Ike And Hurricane Gustav [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Amount of securitization bonds authorized to be issued for restoration costs			$ 566,400
Debt Instrument, Face Amount								$ 545,900
Repayments of Debt					$ 54,300
Hurricanes Laura and Delta and Winter Storm Uri [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Amount of securitization bonds authorized to be issued for restoration costs	$ 242,900
Hurricane Harvey [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Regulatory Asset	$ 13,300
Tranche A One Two Point Six Seven Percent Due June Two Thousand Twenty Seven [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							2.67%
Debt Instrument, Interest Rate, Stated Percentage							2.67%
Debt Instrument, Face Amount							$ 98,700
Repayments of Debt				$ 6,200
Securitization Bonds 3.051% Series Senior Secured Due December 2028 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				3.051%		3.051%
Debt Instrument, Interest Rate, Stated Percentage				3.051%		3.051%
Debt Instrument, Face Amount						$ 100,000
Long-Term Debt, Maturity, Year One				$ 18,800
Long-Term Debt, Maturity, Year Two				19,400
Long-Term Debt, Maturity, Year Three				$ 13,400
Securitization Bonds 3.697% Series Senior Secured Due December 2036 [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				3.697%		3.697%
Debt Instrument, Interest Rate, Stated Percentage				3.697%		3.697%
Debt Instrument, Face Amount						$ 190,850
Long-Term Debt, Maturity, Year Three				$ 6,600
Long-Term Debt, Maturity, Year Four				20,500
Long-Term Debt, Maturity, Year Five				21,200
Grand Gulf [Member] | System Energy [Member]
Debt Instrument [Line Items]
Sale Leaseback Transaction, Net Book Value									$ 500,000
Long-Term Debt, Maturity, Year One				17,188
Long-Term Debt, Maturity, Year Two				17,188
Long-Term Debt, Maturity, Year Three				17,188
Long-Term Debt, Maturity, Year Four				17,188
Long-Term Debt, Maturity, Year Five				$ 17,188