Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Pension Plans Defined Benefit [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	$ (503)	$ (1,005)
Amortization of Gains (Losses), Pre Tax	(11,845)	(23,690)
Pension Plans Defined Benefit [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	(1)	(1)
Amortization of Gains (Losses), Pre Tax	(771)	(1,542)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	0	0
Amortization of Gains (Losses), Pre Tax	0	0
Other Postretirement [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	3,007	6,014
Amortization of Gains (Losses), Pre Tax	(5,485)	(10,971)
Other Postretirement [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	206	412
Amortization of Gains (Losses), Pre Tax	(1,172)	(2,346)
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	62	124
Amortization of Gains (Losses), Pre Tax	(1,287)	(2,574)
Non-Qualified Pension Plans [Member] | Parent Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	(121)	(242)
Amortization of Gains (Losses), Pre Tax	(717)	(1,434)
Non-Qualified Pension Plans [Member] | Entergy Gulf States Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax		0
Amortization of Gains (Losses), Pre Tax	(2)	(4)
Non-Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of Prior Service Cost (Credit), Pre Tax	0	0
Amortization of Gains (Losses), Pre Tax	$ 0	$ 0