Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Narrative) (Details) - USD ($)	1 Months Ended			3 Months Ended
	Mar. 31, 2025	Feb. 28, 2025	Jan. 31, 2025	Mar. 31, 2025	Jan. 02, 2025
Commercial Paper [Member]
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate	4.66%			4.66%
Commercial Paper program limit	$ 2,000,000,000			$ 2,000,000,000
Commercial Paper	1,330,000,000			1,330,000,000
Entergy Arkansas [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	250,000,000			250,000,000
Entergy Louisiana [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	$ 450,000,000			$ 450,000,000
Entergy Louisiana [Member] | 5.80% Series mortgage bonds due March 2055
Debt Instrument [Line Items]
Proceeds from Issuance of Debt			$ 750,000,000
Debt Instrument, Interest Rate, Stated Percentage					5.80%
Entergy Louisiana [Member] | 3.78% Series mortgage bonds due April 2025 (Legacy)
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.78%			3.78%
Repayments of Debt	$ 190,000,000
Entergy Louisiana [Member] | 3.78% Series mortgage bonds due April 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.78%			3.78%
Repayments of Debt	$ 110,000,000
Entergy Mississippi [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	200,000,000			$ 200,000,000
Entergy Mississippi [Member] | 5.80% Series mortgage bonds due April 2055
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	$ 600,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.80%			5.80%
Entergy Texas [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	$ 200,000,000			$ 200,000,000
Entergy Texas [Member] | 5.25% Series mortgage bonds due April 2035
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 500,000,000
Debt Instrument, Interest Rate, Stated Percentage		5.25%
System Energy [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	200,000,000			200,000,000
Entergy New Orleans [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	$ 150,000,000			$ 150,000,000
Entergy New Orleans [Member] | 3.0% Series mortgage bonds due March 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.00%			3.00%
Repayments of Debt	$ 78,000,000
Entergy New Orleans [Member] | Unsecured term loan due March 2026
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate	5.77%			5.77%
Proceeds from Issuance of Debt		$ 80,000,000
System Energy VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage				0.10%
Entergy Arkansas VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage				0.10%
Entergy Louisiana Waterford VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage				0.10%
Entergy Louisiana River Bend VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage				0.10%
Maximum [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.375%
Ratio of Indebtedness to Net Capital	0.65			0.65
Consolidated debt ratio of lessees total capitalization				70.00%
Maximum [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.375%
Ratio of Indebtedness to Net Capital	0.65			0.65
Consolidated debt ratio of lessees total capitalization				70.00%
Maximum [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.375%
Ratio of Indebtedness to Net Capital	0.65			0.65
Maximum [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.375%
Ratio of Indebtedness to Net Capital	0.65			0.65
Maximum [Member] | System Energy [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital	0.65			0.65
Consolidated debt ratio of lessees total capitalization				70.00%
Maximum [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.375%
Ratio of Indebtedness to Net Capital	0.65			0.65
Minimum [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.075%
Minimum [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.075%
Minimum [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.075%
Minimum [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.075%
Minimum [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.075%
Credit Facility of $3 Billion
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 3,000,000,000			$ 3,000,000,000
Letters of Credit Outstanding, Amount	4,000,000			$ 4,000,000
Line of Credit Facility, Commitment Fee Percentage				0.225%
Long-Term Line of Credit	0			$ 0
Line of Credit Facility, Remaining Borrowing Capacity	2,996,000,000			2,996,000,000
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 20,000,000			$ 20,000,000
Line of Credit Facility, Interest Rate at Period End	5.92%			5.92%
Credit Facility of $3 Billion | Maximum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital	0.65			0.65