Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Narrative) (Details) (USD $)	3 Months Ended			3 Months Ended	1 Months Ended		3 Months Ended			1 Months Ended	3 Months Ended											1 Months Ended
	Mar. 31, 2014	Mar. 31, 2014 Commercial Paper Program [Member]	Mar. 31, 2014 Credit Facility [Member]	Mar. 31, 2014 Entergy Arkansas [Member]	Mar. 31, 2014 Entergy Arkansas [Member] Term Loan [Member]	Mar. 31, 2014 Entergy Arkansas [Member] Three Point Seven Zero Percent Series First Mortgage Bonds Due June Two Thousand Twenty Four [Member]	Mar. 31, 2014 Entergy Gulf States Louisiana [Member]	Mar. 31, 2014 Entergy Louisiana [Member]	Mar. 31, 2014 Entergy Mississippi [Member]	Mar. 31, 2014 Entergy Mississippi [Member] Three Point Seven Five Percent Series First Mortgage Bonds Due July Two Thousand Twenty Four [Member]	Mar. 31, 2014 Entergy Texas [Member]	Mar. 31, 2014 System Energy [Member]	Mar. 31, 2014 Entergy New Orleans [Member]	Mar. 31, 2014 Maximum [Member]	Mar. 31, 2014 Minimum [Member]	Mar. 31, 2014 Credit Facility Of One Hundred And Fifty Million [Member] Entergy Arkansas [Member]		Mar. 31, 2014 Credit Facility Of One Hundred And Fifty Million [Member] Entergy Gulf States Louisiana [Member]		Mar. 31, 2014 Credit Facility Of One Hundred And Fifty Million [Member] Entergy Texas [Member]		Apr. 30, 2014 Subsequent Event [Member] Entergy Arkansas [Member] Five Point Zero Percent Series First Mortgage Bonds Due July Two Thousand Eighteen [Member]	Apr. 30, 2014 Subsequent Event [Member] Entergy Mississippi [Member] Four Point Nine Five Percent Series First Mortgage Bonds Due June Two Thousand Eighteen [Member]
Debt Instrument [Line Items]
Amount of Facility	$ 3,500,000,000															$ 150,000,000	[1]	$ 150,000,000	[2]	$ 150,000,000	[3]
Issuance of letters of credit, percentage of total borrowing capacity	50.00%			50.00%			50.00%	50.00%			50.00%
Letters of Credit Outstanding, Amount							26,000,000	23,000,000			36,300,000		8,500,000			1,000,000
Line of credit facility, commitment fee percentage	0.275%								1.50%				1.50%	0.275%	0.125%
Debt, weighted average interest rate		0.91%	1.93%
Consolidated debt ratio				65.00%			65.00%	65.00%	65.00%		65.00%		65.00%	65.00%
Commercial Paper program limit	1,500,000,000.0
Commercial Paper Amount Outstanding	1,059,000,000
Line of credit facility commitment fee as a percentage of undrawn commitment amount				0.125%			0.10%	0.10%				0.125%
Issuance Of Debt						375,000,000
Repayments of debt					250,000,000					100,000,000												115,000,000	95,000,000
Debt instrument, interest rate, stated percentage						3.70%				3.75%												5.00%	4.95%
Consolidated debt ratio of total capitalization				70.00%			70.00%	70.00%				70.00%
Amount Drawn/ Outstanding	$ 115,000,000								$ 25,000,000							$ 0		$ 0		$ 0

[1] The credit facility allows Entergy Arkansas to issue letters of credit against 50% of the borrowing capacity of the facility. As of March 31, 2014, $1 million in letters of credit were outstanding.

[2] The credit facility allows Entergy Gulf States Louisiana to issue letters of credit against 50% of the borrowing capacity of the facility. As of March 31, 2014, $26 million in letters of credit were outstanding.

[3] The credit facility allows Entergy Texas to issue letters of credit against 50% of the borrowing capacity of the facility. As of March 31, 2014, $36.3 million in letters of credit were outstanding.