Long-Term Debt (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2022	May 31, 2015	Dec. 31, 2024	Jan. 15, 2026	Jan. 08, 2026	Jan. 06, 2026	Dec. 31, 2025	Apr. 30, 2022	Jul. 31, 2015	Dec. 31, 1988
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One							$ 2,375,720
Long-Term Debt, Maturity, Year Two							1,054,820
Long-Term Debt, Maturity, Year Three							2,158,446
Long-Term Debt, Maturity, Year Four							405,720
Long-Term Debt, Maturity, Year Five							916,822
System Energy [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One							0
Long-Term Debt, Maturity, Year Two							126,400
Long-Term Debt, Maturity, Year Three							325,000
Long-Term Debt, Maturity, Year Four							0
Long-Term Debt, Maturity, Year Five							0
Entergy Arkansas [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One							690,000
Long-Term Debt, Maturity, Year Two							13,700
Long-Term Debt, Maturity, Year Three							350,000
Long-Term Debt, Maturity, Year Four							70,000
Long-Term Debt, Maturity, Year Five							0
Entergy Louisiana [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One							720,000
Long-Term Debt, Maturity, Year Two							614,000
Long-Term Debt, Maturity, Year Three							425,000
Long-Term Debt, Maturity, Year Four							0
Long-Term Debt, Maturity, Year Five							316,200
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							85,720
Long-Term Debt, Maturity, Year Two							720
Long-Term Debt, Maturity, Year Three							719
Long-Term Debt, Maturity, Year Four							35,720
Long-Term Debt, Maturity, Year Five							622
Entergy Texas [Member]
Debt Instrument [Line Items]
Long-Term Debt, Maturity, Year One							130,000
Long-Term Debt, Maturity, Year Two							150,000
Long-Term Debt, Maturity, Year Three							32,727
Long-Term Debt, Maturity, Year Four							300,000
Long-Term Debt, Maturity, Year Five							$ 0
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							$ 19,400
Long-Term Debt, Maturity, Year Two							13,400
Long-Term Debt, Gross			51,574				$ 32,727
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 Two							$ 6,600
Long-Term Debt, Maturity, Year Three							20,500
Long-Term Debt, Maturity, Year Four							21,200
Long-Term Debt, Maturity, Year Five							21,900
Long-Term Debt, Gross			190,850				$ 190,850
4.44% Series mortgage bonds due January 2026 [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							4.44%
Debt Instrument, Interest Rate, Stated Percentage							4.44%
Long-Term Debt, Gross			250,000				$ 250,000
4.44% Series mortgage bonds due January 2026 [Member] | Entergy Louisiana [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				4.44%
Debt Instrument, Interest Rate, Stated Percentage				4.44%
Long-Term Debt, Gross				$ 250,000
4.95% Series mortgage bonds due January 2036 | Entergy Arkansas [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					4.95%
Debt Instrument, Interest Rate, Stated Percentage					4.95%
Long-Term Debt, Gross					$ 500,000
5.75% Series mortgage bonds due January 2056 | Entergy Arkansas [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					5.75%
Debt Instrument, Interest Rate, Stated Percentage					5.75%
Long-Term Debt, Gross					$ 500,000
3.5% Series mortgage bonds due April 2026 [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							3.50%
Debt Instrument, Interest Rate, Stated Percentage							3.50%
Long-Term Debt, Gross			600,000				$ 600,000
3.5% Series mortgage bonds due April 2026 [Member] | Entergy Arkansas [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					3.50%
Debt Instrument, Interest Rate, Stated Percentage					3.50%
Long-Term Debt, Gross					$ 600,000
VIE Notes Payable, 2.05% Series K due September 2027 [Member] | System Energy [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							2.05%
Debt Instrument, Interest Rate, Stated Percentage							2.05%
Long-Term Debt, Gross			$ 90,000				$ 90,000
VIE Notes Payable, 5.28% Series L due January 2029 | System Energy [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						5.28%
Debt Instrument, Interest Rate, Stated Percentage						5.28%
Long-Term Debt, Gross						$ 80,000
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