Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 30, 2012	Jun. 30, 2011
Entity Registrant Name	ENTERGY CORP /DE/
Entity Central Index Key	0000065984
Document Type	10-Q
Document Period End Date	Mar. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 12.1
Entity Common Stock, Shares Outstanding		177,159,198
Entergy Arkansas [Member]
Entity Registrant Name	Entergy Arkansas, Inc.
Entity Central Index Key	0000007323
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entergy Gulf States Louisiana [Member]
Entity Registrant Name	ENTERGY GULF STATES LOUISIANA, L.L.C.
Entity Central Index Key	0000044570
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entergy Louisiana [Member]
Entity Registrant Name	ENTERGY LOUISIANA, LLC
Entity Central Index Key	0001348952
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entergy Mississippi [Member]
Entity Registrant Name	ENTERGY MISSISSIPPI, INC.
Entity Central Index Key	0000066901
Current Fiscal Year End Date	--07-21
Entity Filer Category	Non-accelerated Filer
Entergy New Orleans [Member]
Entity Registrant Name	ENTERGY NEW ORLEANS, INC.
Entity Central Index Key	0000071508
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entergy Texas [Member]
Entity Registrant Name	ENTERGY TEXAS, INC.
Entity Central Index Key	0001427437
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
System Energy [Member]
Entity Registrant Name	SYSTEM ENERGY RESOURCES, Inc.
Entity Central Index Key	0000202584
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer