Summary of Significant Accounting Policies (Schedule of Customer Advances for Construction) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Customer advances for construction, noncurrent	$ 634,587	$ 292,077
Entergy Texas [Member] | Other Noncurrent Liabilities [Member]
Customer advances for construction, noncurrent	63,000	47,000
Entergy Arkansas [Member] | Other Noncurrent Liabilities [Member]
Customer advances for construction, noncurrent	166,000	96,000
Entergy Louisiana [Member]
Customer advances for construction, noncurrent	291,842	115,102
Entergy Mississippi [Member]
Customer advances for construction, noncurrent	112,618	32,659
Entergy New Orleans [Member] | Other Noncurrent Liabilities [Member]
Customer advances for construction, noncurrent	$ 1,000	$ 1,000