Commitment and Contingencies (Long-Term Purchase Commitment) (Details)	3 Months Ended
	Mar. 31, 2025 unit
Power island equipment
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	15
Combustion turbine
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	2
Entergy Arkansas [Member] | Power island equipment
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	4
Entergy Arkansas [Member] | Combustion turbine
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	1
Entergy Louisiana [Member] | Power island equipment
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	9
Entergy Louisiana [Member] | Combustion turbine
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	0
Entergy Mississippi [Member] | Power island equipment
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	2
Entergy Mississippi [Member] | Combustion turbine
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	0
Entergy Texas [Member] | Power island equipment
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	0
Entergy Texas [Member] | Combustion turbine
Long-Term Purchase Commitment [Line Items]
Long-Term Purchase Commitment, Minimum Quantity Required	1