Property, Plant, And Equipment Property, Plant, and Equipment (Significant Unobservable Inputs Used In Valuation Of Plants and Related Assets) (Details) - Entergy Wholesale Commodities [Member]	9 Months Ended
	Sep. 30, 2015
Fitzpatrick [Member]
Weighted Average Cost Of Capital Used In Asset Valuation	7.50%
Fair Value Inputs, Long-term Pre-tax Operating Margin, Percent	10.20%
Pilgrim [Member]
Weighted Average Cost Of Capital Used In Asset Valuation	7.90%
Fair Value Inputs, Long-term Pre-tax Operating Margin, Percent	8.10%
Pilgrim [Member] | Minimum [Member]
Weighted Average Cost Of Capital Used In Asset Valuation	7.50%
Fair Value Inputs, Long-term Pre-tax Operating Margin, Percent	2.40%
Pilgrim [Member] | Maximum [Member]
Weighted Average Cost Of Capital Used In Asset Valuation	8.00%
Fair Value Inputs, Long-term Pre-tax Operating Margin, Percent	10.60%