Rate and Regulatory Matters (Entergy Arkansas Opportunity Sales Proceeding - Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	Jul. 31, 2020	Apr. 30, 2016	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2016
Regulatory Asset, Noncurrent				$ 5,255,509	$ 5,669,404
Asset Impairment Charges				107,134	42,679	$ (163,464)
Opportunity Sales [Member]
Regulatory Asset, Noncurrent				0	131,800
Entergy Arkansas [Member]
ALJ Recommended Percentage By Which Payments Be Reduced		20.00%
Liability Recorded Related to Estimated Payments Due Utility Operating Companies								$ 35,000	$ 87,000
Regulatory Asset Recorded to Represent Estimate of Recoverable Retail Portion of Costs								$ 31,000	$ 75,000
Regulatory Asset, Noncurrent				1,700,110	1,885,361
Refund to customers, plus interest, associated with recalculated bandwidth remedy	$ 13,700
Asset Impairment Charges				131,775	78,434	$ 0
Entergy Arkansas [Member] | Opportunity Sales [Member]
Regulatory Asset, Noncurrent				$ 0	$ 131,800		$ 116,000
Asset Impairment Charges			$ 131,800
Asset Impairment Charges, net of tax			$ 99,100