Long-Term Debt (Schedule of Maturities of Long-Term Debt) (Details) $ in Thousands	Dec. 31, 2024 USD ($)
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
Entergy Arkansas [Member]
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]
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 Mississippi [Member]
Long-Term Debt, Maturity, Year One	0
Long-Term Debt, Maturity, Year Two	0
Long-Term Debt, Maturity, Year Three	150,000
Long-Term Debt, Maturity, Year Four	375,000
Long-Term Debt, Maturity, Year Five	0
Entergy New Orleans [Member]
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]
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
System Energy [Member]
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