Summary Of Significant Accounting Policies (Schedule Of Subsidiaries' Investment And Accumulated Depreciation In Generating Stations) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Independence Unit One [Member] | Entergy Arkansas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	31.50%
Jointly Owned Utility Plant, Net Ownership Amount	$ 145
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 108
Independence Common Facilities [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	7.18%
Jointly Owned Utility Plant, Net Ownership Amount	$ 21
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 15
Independence Common Facilities [Member] | Entergy Arkansas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	15.75%
Jointly Owned Utility Plant, Net Ownership Amount	$ 42
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 31
White Bluff Units One And Two [Member] | Entergy Arkansas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	57.00%
Jointly Owned Utility Plant, Net Ownership Amount	$ 593
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 404
Ouachita Common Facilities [Member] | Entergy Arkansas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Gas
Jointly Owned Utility Plant, Proportionate Ownership Share	66.67%
Jointly Owned Utility Plant, Net Ownership Amount	$ 173
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 159
Ouachita Common Facilities [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Gas
Jointly Owned Utility Plant, Proportionate Ownership Share	33.33%
Jointly Owned Utility Plant, Net Ownership Amount	$ 91
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 79
Roy S Nelson Unit Six [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	10.90%
Jointly Owned Utility Plant, Net Ownership Amount	$ 120
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 74
Roy S Nelson Unit Six [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	40.25%
Jointly Owned Utility Plant, Net Ownership Amount	$ 299
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 224
Roy S Nelson Unit Six [Member] | Entergy Texas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	29.75%
Jointly Owned Utility Plant, Net Ownership Amount	$ 211
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 141
Roy S Nelson Unit Six Common Facilities [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	5.97%
Jointly Owned Utility Plant, Net Ownership Amount	$ 3
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 1
Roy S Nelson Unit Six Common Facilities [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	22.04%
Jointly Owned Utility Plant, Net Ownership Amount	$ 22
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 11
Roy S Nelson Unit Six Common Facilities [Member] | Entergy Texas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	16.30%
Jointly Owned Utility Plant, Net Ownership Amount	$ 8
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 4
Big Cajun Two Unit Three [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	24.15%
Jointly Owned Utility Plant, Net Ownership Amount	$ 149
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 136
Big Cajun Two Unit Three [Member] | Entergy Texas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	17.85%
Jointly Owned Utility Plant, Net Ownership Amount	$ 112
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 101
Big Cajun 2 Unit 3 Common Facilities [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	8.05%
Jointly Owned Utility Plant, Net Ownership Amount	$ 5
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 3
Big Cajun 2 Unit 3 Common Facilities [Member] | Entergy Texas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	5.95%
Jointly Owned Utility Plant, Net Ownership Amount	$ 4
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 2
Acadia Common Facilities [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Gas
Jointly Owned Utility Plant, Proportionate Ownership Share	50.00%
Jointly Owned Utility Plant, Net Ownership Amount	$ 22
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 3
Independence Units One And Two And Common Facilities [Member] | Entergy Mississippi [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	25.00%
Jointly Owned Utility Plant, Net Ownership Amount	$ 293
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 182
Grand Gulf Unit One [Member] | System Energy [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Nuclear
Jointly Owned Utility Plant, Proportionate Ownership Share	90.00%
Jointly Owned Utility Plant, Net Ownership Amount	$ 5,499
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 3,494
Independence Unit Two [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Coal
Jointly Owned Utility Plant, Proportionate Ownership Share	14.37%
Jointly Owned Utility Plant, Net Ownership Amount	$ 79
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 59
Ouachita Units One And Two [Member] | Entergy Arkansas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Proportionate Ownership Share	100.00%
Ouachita Unit Three [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Proportionate Ownership Share	100.00%
Union Common Facilities [Member] | Entergy Arkansas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Gas
Jointly Owned Utility Plant, Proportionate Ownership Share	25.00%
Jointly Owned Utility Plant, Net Ownership Amount	$ 29
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 12
Union Common Facilities [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Gas
Jointly Owned Utility Plant, Proportionate Ownership Share	50.00%
Jointly Owned Utility Plant, Net Ownership Amount	$ 59
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 14
Union Common Facilities [Member] | Entergy New Orleans [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Fuel Type	Gas
Jointly Owned Utility Plant, Proportionate Ownership Share	25.00%
Jointly Owned Utility Plant, Net Ownership Amount	$ 30
Jointly Owned Utility Plant, Ownership Amount of Plant Accumulated Depreciation	$ 10
Union Unit 1 [Member] | Entergy New Orleans [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Proportionate Ownership Share	100.00%
Union Unit 2 [Member] | Entergy Arkansas [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Proportionate Ownership Share	100.00%
Union Units 3 and 4 [Member] | Entergy Louisiana [Member]
Jointly Owned Utility Plant Interests [Line Items]
Jointly Owned Utility Plant, Proportionate Ownership Share	100.00%