Long-Term Debt (Schedule of Maturities of Long-Term Debt) (Details) $ in Thousands	Dec. 31, 2025 USD ($)
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
Entergy Arkansas [Member]
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]
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 Mississippi [Member]
Long-Term Debt, Maturity, Year One	0
Long-Term Debt, Maturity, Year Two	150,000
Long-Term Debt, Maturity, Year Three	375,000
Long-Term Debt, Maturity, Year Four	0
Long-Term Debt, Maturity, Year Five	0
Entergy New Orleans [Member]
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]
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
System Energy [Member]
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