v3.26.1
Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Narrative) (Details) - USD ($)
 1 Months Ended 6 Months Ended
Sep. 30, 2026
Jul. 31, 2026
May 31, 2026
Feb. 28, 2026
Jun. 30, 2026
Commercial Paper [Member]          
Debt Instrument [Line Items]          
Debt, Weighted Average Interest Rate         4.01%
Commercial Paper program limit         $ 2,000,000,000
Commercial Paper         1,544,000,000
Entergy Arkansas [Member]          
Debt Instrument [Line Items]          
Authorized Short Term Borrowings         250,000,000
Entergy Louisiana [Member]          
Debt Instrument [Line Items]          
Authorized Short Term Borrowings         450,000,000
Entergy Louisiana [Member] | 4.90% Series mortgage bonds due April 2036 [Member]          
Debt Instrument [Line Items]          
Proceeds from Issuance of Debt       $ 750,000,000  
Debt Instrument, Interest Rate, Stated Percentage       4.90%  
Entergy Louisiana [Member] | 5.65% Series mortgage bonds due April 2056 [Member]          
Debt Instrument [Line Items]          
Proceeds from Issuance of Debt       $ 750,000,000  
Debt Instrument, Interest Rate, Stated Percentage       5.65%  
Entergy Mississippi [Member]          
Debt Instrument [Line Items]          
Authorized Short Term Borrowings         200,000,000
Entergy Texas [Member]          
Debt Instrument [Line Items]          
Authorized Short Term Borrowings         200,000,000
System Energy [Member]          
Debt Instrument [Line Items]          
Authorized Short Term Borrowings         200,000,000
Entergy New Orleans [Member]          
Debt Instrument [Line Items]          
Authorized Short Term Borrowings         $ 150,000,000
Entergy New Orleans [Member] | 4% Series mortgage bonds due June 2026 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage     4.00%    
Repayments of Debt     $ 85,000,000    
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 Arkansas VIE [Member] | VIE Notes Payable, 1.84% Series N due July 2026 [Member]          
Debt Instrument [Line Items]          
Notes Payable, Noncurrent         $ 90,000,000
Debt Instrument, Interest Rate, Stated Percentage         1.84%
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
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
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
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
Maximum [Member] | System Energy [Member]          
Debt Instrument [Line Items]          
Ratio of Indebtedness to Net Capital         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
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%
Subsequent Event [Member] | Entergy Texas [Member] | 1.50% Series mortgage bonds due September 2026 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage 1.50%        
Repayments of Debt $ 130,000,000        
Subsequent Event [Member] | Entergy Arkansas VIE [Member] | VIE Notes Payable, 5.28% Series P due July 2031 [Member]          
Debt Instrument [Line Items]          
Notes Payable, Noncurrent   $ 120,000,000      
Debt Instrument, Interest Rate, Stated Percentage   5.28%      
Subsequent Event [Member] | Entergy Arkansas VIE [Member] | VIE Notes Payable, 1.84% Series N due July 2026 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage   1.84%      
Repayments of Debt   $ 90,000,000      
Credit Facility of $3 Billion [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity         $ 3,000,000,000
Letters of Credit Outstanding, Amount         $ 3,000,000
Line of Credit Facility, Commitment Fee Percentage         0.225%
Long-Term Line of Credit         $ 0
Line of Credit Facility, Remaining Borrowing Capacity         2,997,000,000
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit         $ 20,000,000
Line of Credit Facility, Interest Rate at Period End         5.14%
Credit Facility of $3 Billion [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Ratio of Indebtedness to Net Capital         0.65
Uncommitted Credit Facility of $160 Million [Member] | Entergy Texas [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity         $ 160,000,000
Letters of Credit Outstanding, Amount         $ 0
Line of Credit Facility, Commitment Fee Percentage         1.05%
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | MISO [Member]          
Debt Instrument [Line Items]          
Letters of Credit Outstanding, Amount         $ 63,000,000.0
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | Non-MISO [Member]          
Debt Instrument [Line Items]          
Letters of Credit Outstanding, Amount         1,300,000
Uncommitted Credit Facility of $60 Million [Member] | Entergy Louisiana [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity         60,000,000
Letters of Credit Outstanding, Amount         $ 38,500,000
Line of Credit Facility, Commitment Fee Percentage         0.50%
Uncommitted Credit Facility of $60 Million [Member] | Entergy Louisiana [Member] | MISO [Member]          
Debt Instrument [Line Items]          
Letters of Credit Outstanding, Amount         $ 37,000,000.0
Uncommitted Credit Facility of $60 Million [Member] | Entergy Louisiana [Member] | Non-MISO [Member]          
Debt Instrument [Line Items]          
Letters of Credit Outstanding, Amount         1,500,000
Uncommitted Credit Facility of $150 Million [Member] | Entergy Texas [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity         150,000,000
Letters of Credit Outstanding, Amount         $ 110,600,000
Line of Credit Facility, Commitment Fee Percentage         1.25%
Uncommitted Credit Facility of $125 Million [Member] | Entergy Louisiana [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity         $ 125,000,000
Letters of Credit Outstanding, Amount         $ 111,100,000
Line of Credit Facility, Commitment Fee Percentage         0.78%
Uncommitted Credit Facility of $100 Million [Member] | Entergy Arkansas [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity         $ 100,000,000
Letters of Credit Outstanding, Amount         $ 59,500,000
Line of Credit Facility, Commitment Fee Percentage         0.78%