Consolidated Statements of Changes in Common Equity (ENTERGY ARKANSAS, INC.) (Unaudited) (USD $) In Thousands	Total		Common Stock	Paid-in Capital	Retained Earnings		Entergy Arkansas [Member]	Entergy Arkansas [Member] Common Stock	Entergy Arkansas [Member] Paid-in Capital	Entergy Arkansas [Member] Retained Earnings
Beginning Balance at Dec. 31, 2009	$ 8,707,360		$ 2,548	$ 5,370,042	$ 8,043,122		$ 1,411,561	$ 470	$ 588,444	$ 822,647
Net income	1,036,999	[1]			1,021,951	[1]	163,944			163,944
Common stock	(453,683)						(173,400)			(173,400)
Preferred stock	(15,048)						(5,155)			(5,155)
Ending Balance at Sep. 30, 2010	8,825,752		2,548	5,367,091	8,611,081		1,396,950	470	588,444	808,036
Beginning Balance at Jun. 30, 2010
Net income	497,901						93,290
Ending Balance at Sep. 30, 2010	8,825,752		2,548	5,367,091			1,396,950	470	588,444
Beginning Balance at Dec. 31, 2010	8,590,400		2,548	5,367,474	8,689,401		1,403,906	470	588,444	814,992
Net income	1,207,346	[1]			1,192,300	[1]	156,851			156,851
Common stock	(443,290)						(117,100)			(117,100)
Preferred stock	(15,046)						(5,155)			(5,155)
Ending Balance at Sep. 30, 2011	9,059,362		2,548	5,362,959	9,439,000		1,438,502	470	588,444	849,588
Beginning Balance at Jun. 30, 2011
Net income	633,069						80,945
Ending Balance at Sep. 30, 2011	$ 9,059,362		$ 2,548	$ 5,362,959			$ 1,438,502	$ 470	$ 588,444

[1] Consolidated net income and preferred dividend requirements of subsidiaries for both 2010 and 2011 include $10.1 million of preferred dividends on subsidiaries' preferred stock without sinking fund that is not presented as equity.