Segment and Related Information (Tables)

9 Months Ended

Sep. 30, 2012

Segment Reporting [Abstract]

Financial data for business segments

	Electric Utilities
	Traditional Operating Companies		Southern Power		Eliminations			Total		All Other		Eliminations			Consolidated
	(in millions)
Three Months Ended September 30, 2012:
Operating revenues	$	4,794	$	355	$	(116	)	$	5,033	$	36	$	(20	)	$	5,049
Segment net income (loss)(a)	908		68		1			977		1		(2		)	976
Nine Months Ended September 30, 2012:
Operating revenues	$	12,232	$	894	$	(338	)	$	12,788	$	109	$	(63	)	$	12,834
Segment net income (loss)(a)	1,797		144		—			1,941		30		(4		)	1,967
Total assets at September 30, 2012	$	57,862	$	3,782	$	(158	)	$	61,486	$	1,084	$	(607	)	$	61,963
Three Months Ended September 30, 2011:
Operating revenues	$	5,145	$	363	$	(97	)	$	5,411	$	38	$	(21	)	$	5,428
Segment net income (loss)(a)	862		56		—			918		—		(2		)	916
Nine Months Ended September 30, 2011:
Operating revenues	$	13,246	$	950	$	(288	)	$	13,908	$	114	$	(61	)	$	13,961
Segment net income (loss)(a)	1,805		138		—			1,943		2		(3		)	1,942
Total assets at December 31, 2011	$	54,622	$	3,581	$	(127	)	$	58,076	$	1,592	$	(401	)	$	59,267

(a) After dividends on preferred and preference stock of subsidiaries

Financial data for products and services

Products and Services

	Electric Utilities' Revenues
Period	Retail		Wholesale		Other		Total
	(in millions)
Three Months Ended September 30, 2012	$	4,379	$	497	$	157	$	5,033
Three Months Ended September 30, 2011	4,693		557		161		5,411
Nine Months Ended September 30, 2012	$	11,068	$	1,261	$	459	$	12,788
Nine Months Ended September 30, 2011	11,931		1,513		464		13,908