Rate And Regulatory Matters Rate And Regulatory Matters (Net Payments Or Receipts Among Utility Operating Companies) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	May 31, 2014
Entergy Texas [Member]
Net payments or receipts among utility operating companies pursuant to FERC order	$ (49)
Entergy New Orleans [Member]
Net payments or receipts among utility operating companies pursuant to FERC order	2
Entergy Mississippi [Member]
Net payments or receipts among utility operating companies pursuant to FERC order	(11)
Entergy Louisiana [Member]
Net payments or receipts among utility operating companies pursuant to FERC order	0
Entergy Arkansas [Member]
Net payments or receipts among utility operating companies pursuant to FERC order	68
Entergy Gulf States Louisiana [Member]
Net payments or receipts among utility operating companies pursuant to FERC order	$ (10)