Rate And Regulatory Matters (Fuel And Purchased Power Cost Recovery) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
Other Regulatory Assets	$ 4,968,553,000		$ 3,893,363,000
Entergy Arkansas [Member]
Deferred fuel costs	209,200,000	[1]	68,700,000
Other Regulatory Assets	1,391,276,000		1,014,392,000
Deferred fuel cost noncurrent	65,900,000
Entergy Gulf States Louisiana [Member]
Deferred fuel costs	89,500,000	[2]	109,700,000	[2]
Other Regulatory Assets	426,381,000		321,466,000
Deferred fuel cost noncurrent	100,124,000		100,124,000
Entergy Louisiana [Member]
Deferred fuel costs	17,600,000	[2]	37,600,000	[2]
Other Regulatory Assets	914,229,000		715,503,000
Deferred fuel cost noncurrent	67,998,000		67,998,000
Entergy Mississippi [Member]
Deferred fuel costs	(2,200,000)		38,100,000
Other Regulatory Assets	364,747,000		318,462,000
Entergy New Orleans [Member]
Deferred fuel costs	(24,300,000)	[2]	(19,100,000)	[2]
Other Regulatory Assets	175,596,000		137,191,000
Deferred fuel cost noncurrent	4,080,000		4,080,000
Entergy Texas [Member]
Deferred fuel costs	11,900,000		(4,100,000)
Other Regulatory Assets	922,087,000		919,234,000
Gas Hedging [Member] | Entergy Gulf States Louisiana [Member]
Other Regulatory Assets	$ 8,200,000		$ 0

[1] (a)2014 includes $65.9 million for Entergy Arkansas of fuel, purchased power, and capacity costs, which do not currently earn a return on investment and whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.

[2] 2014 and 2013 include $100.1 million for Entergy Gulf States Louisiana, $68 million for Entergy Louisiana, and $4.1 million for Entergy New Orleans of fuel, purchased power, and capacity costs, which do not currently earn a return on investment and whose recovery periods are indeterminate but are expected to be recovered over a period greater than twelve months.