Stock-Based Compensation (Schedule Of Financial Information Of Options) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 6.0	$ 5.0	$ 5.0
Compensation expense included in Entergy's Consolidated Net Income for the year	4.2	4.2	3.9
Tax benefit (expense) recognized in Entergy's Consolidated Net Income for the year	1.1	1.1	1.0
Compensation cost capitalized as part of fixed assets and inventory	1.7	1.5	1.5
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense included in Entergy's Consolidated Net Income for the year	2.0	1.9	2.0
Tax benefit (expense) recognized in Entergy's Consolidated Net Income for the year	0.5	0.5	0.5
Compensation cost capitalized as part of fixed assets and inventory	0.8	0.7	0.9
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense included in Entergy's Consolidated Net Income for the year	23.2	24.7	23.1
Tax benefit (expense) recognized in Entergy's Consolidated Net Income for the year	5.9	6.3	5.9
Compensation cost capitalized as part of fixed assets and inventory	9.2	9.3	8.5
Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense included in Entergy's Consolidated Net Income for the year	16.0	14.5	12.6
Tax benefit (expense) recognized in Entergy's Consolidated Net Income for the year	4.1	3.7	3.2
Compensation cost capitalized as part of fixed assets and inventory	$ 6.7	$ 5.8	$ 4.9