Stock Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended	1 Months Ended		1 Months Ended
	Sep. 30, 2014	Jan. 31, 2014 Equity Ownership And Long Term Cash Incentive Plan Two Thousand Eleven [Member]	Jan. 30, 2014 Equity Ownership And Long Term Cash Incentive Plan Two Thousand Eleven [Member]	Jan. 31, 2014 Restricted Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option granted (in shares)	611,700
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 8.71
Stock options outstanding	8,785,130
Weighted-average exercise price of stock options outstanding (in dollars per share)	$ 81.23
Intrinsic value in the money stock options	$ 4.8
Restricted stock awards granted				352,600
Long-term incentive plan awards		226,792
Restricted stock awards granted value (in dollars per share)				$ 63.17
LTIP awards granted value (in dollars per share)			$ 67.16
Vesting period of awards under Entergy's plans, years	3 years