Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Narrative) (Details) (USD $)	6 Months Ended				6 Months Ended			1 Months Ended		0 Months Ended	1 Months Ended					6 Months Ended	1 Months Ended		6 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 31, 2013	Jun. 30, 2013 Commercial Paper Program [Member]	Jun. 30, 2013 Credit Facility [Member]	Jun. 30, 2013 Entergy Arkansas [Member]	Jul. 31, 2013 Entergy Arkansas [Member] Credit Facility [Member]	Jul. 31, 2013 Entergy Arkansas [Member] Non Interest Bearing First Mortgage Bonds [Member]	May 31, 2013 Entergy Arkansas [Member] Three Point Zero Five Percent Series First Mortgage Bonds Due June Two Thousand Twenty Three [Member]	Jun. 30, 2013 Entergy Arkansas [Member] Four Point Seven Five Percent Series First Mortgage Bonds Due June Two Thousand Sixty Three [Member]	Jul. 31, 2013 Entergy Arkansas [Member] Five Point Four Percent Series First Mortgage Bonds Due August Two Thousand Thirteen [Member]	Jun. 30, 2013 Entergy Arkansas [Member] Five Point Four Percent Series First Mortgage Bonds Due August Two Thousand Thirteen [Member]	May 31, 2013 Entergy Arkansas [Member] Five Point Four Percent Series First Mortgage Bonds Due August Two Thousand Thirteen [Member]	Jun. 30, 2013 Entergy Arkansas [Member] Nine Percent Series H Notes [Member]	Jan. 31, 2013 Entergy Arkansas [Member] Forty Five Million Dollar PCRB Two Point Three Seven Five Percent Due January Two Thousand Twenty One [Member]	Jan. 31, 2013 Entergy Arkansas [Member] Fifty Four Million PCRB One Point Five Five Percent Due October Two Thousand Seventeen [Member]	Jun. 30, 2013 Entergy Gulf States Louisiana [Member]	Feb. 28, 2013 Entergy Gulf States Louisiana [Member] Three Point Three Eight Percent Series R Notes Due August Twenty Twenty [Member]	May 31, 2013 Entergy Gulf States Louisiana [Member] Five Point Five Six Percent Series N Notes [Member]	Jun. 30, 2013 Entergy Louisiana [Member]	May 31, 2013 Entergy Louisiana [Member] Four Point Seven Percent Series First Mortgage Bonds Due June Two Thousand Sixty Three [Member]	Jun. 30, 2013 Entergy Mississippi [Member]	Feb. 28, 2013 Entergy Mississippi [Member] Five Point One Five Percent Series First Mortgage Bonds Due February Two Thousand Thirteen [Member]	Jun. 30, 2013 Entergy Texas [Member]	Jun. 30, 2013 Entergy New Orleans Three Point Nine Percent Series First Mortgage Bonds Due July Two Thousand Twenty Three [Member]	Jun. 30, 2013 Entergy New Orleans Five Point Two Five Percent Series First Mortgage Bonds Due August Two Thousand Thirteen [Member]	Jun. 30, 2013 Maximum [Member]	Jun. 30, 2013 Maximum [Member] Entergy Arkansas [Member]	Jun. 30, 2013 Maximum [Member] Entergy Gulf States Louisiana [Member]	Jun. 30, 2013 Maximum [Member] Entergy Louisiana [Member]	Jun. 30, 2013 Maximum [Member] Entergy Texas [Member]	Jun. 30, 2013 Maximum [Member] Entergy New Orleans	Jun. 30, 2013 Minimum [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 3,500,000,000					$ 250,000,000
Issuance of letters of credit, percentage of total borrowing capacity	50.00%				50.00%											50.00%			50.00%				50.00%
Line of credit facility, commitment fee percentage	0.275%																									0.275%						0.125%
Debt, weighted average interest rate			0.84%	1.97%
Consolidated debt ratio					65.00%																65.00%					65.00%		65.00%	65.00%	65.00%
Commercial Paper program limit	1,000,000,000	1,500,000,000
Commercial Paper Amount Outstanding	948,000,000
Debt ratio																											65.00%				65.00%
Line of credit facility commitment fee as a percentage of undrawn commitment amount	0.125%
Issuance Of Debt								250,000,000	125,000,000					45,000,000	54,700,000					100,000,000				100,000,000
Repayments of debt										300,000,000	300,000,000	300,000,000	30,000,000					75,000,000				100,000,000			70,000,000
Debt instrument, interest rate, stated percentage								3.05%	4.75%		5.40%	5.40%	9.00%	2.375%	1.55%		3.38%	5.56%		4.70%		5.15%		3.90%	5.25%
Consolidated debt ratio of total capitalization																										70
Issuance of Senior Notes																	70,000,000
Line of Credit Facility, Amount Outstanding	190,000,000					250,000,000
Held-to-maturity Securities Pledged as Collateral							$ 255,000,000