Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of nuclear fuel company VIE credit facilities) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2026 USD ($)
Entergy Arkansas VIE [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Entergy Arkansas VIE [Member] \| Credit Facility of $80 Million [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Current Borrowing Capacity	$ 80.0
Line of Credit Facility, Interest Rate During Period	4.76%
Long-Term Line of Credit	$ 40.7
System Energy VIE [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
System Energy VIE [Member] \| Credit Facility of $120 Million [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Current Borrowing Capacity	$ 120.0
Line of Credit Facility, Interest Rate During Period	4.81%
Long-Term Line of Credit	$ 54.4
Entergy Louisiana River Bend VIE [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Entergy Louisiana River Bend VIE [Member] \| Credit Facility of $105 Million [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Current Borrowing Capacity	$ 105.0
Line of Credit Facility, Interest Rate During Period	4.77%
Long-Term Line of Credit	$ 28.6
Entergy Louisiana Waterford VIE [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Entergy Louisiana Waterford VIE [Member] \| Credit Facility of $105 Million [Member]
Schedule of nuclear fuel company VIE credit facilities [Abstract]
Line of Credit Facility, Current Borrowing Capacity	$ 105.0
Line of Credit Facility, Interest Rate During Period	4.77%
Long-Term Line of Credit	$ 27.7