Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Financial data for business segments

Financial data for business segments and products and services for the years ended December 31, 2014, 2013, and 2012 was as follows:

	Electric Utilities
	Traditional Operating Companies		Southern Power			Eliminations			Total		All Other			Eliminations			Consolidated
	(in millions)
2014
Operating revenues	$	17,354	$	1,501		$	(449	)	$	18,406	$	159		$	(98	)	$	18,467
Depreciation and amortization	1,709		220			—			1,929		16			—			1,945
Interest income	17		1			—			18		3			(2		)	19
Interest expense	705		89			—			794		43			(2		)	835
Income taxes	1,056		(3		)	—			1,053		(76		)	—			977
Segment net income (loss)(a) (b)	1,797		172			—			1,969		(3		)	(3		)	1,963
Total assets	64,644		5,550			(131		)	70,063		1,156			(296		)	70,923
Gross property additions	5,568		942			—			6,510		11			1			6,522
2013
Operating revenues	$	16,136	$	1,275		$	(376	)	$	17,035	$	139		$	(87	)	$	17,087
Depreciation and amortization	1,711		175			—			1,886		15			—			1,901
Interest income	17		1			—			18		2			(1		)	19
Interest expense	714		74			—			788		36			—			824
Income taxes	889		46			—			935		(85		)	(1		)	849
Segment net income (loss)(a) (b)	1,486		166			—			1,652		(10		)	2			1,644
Total assets	59,447		4,429			(101		)	63,775		1,077			(306		)	64,546
Gross property additions	5,226		633			—			5,859		9			—			5,868
2012
Operating revenues	$	15,730	$	1,186		$	(438	)	$	16,478	$	141		$	(82	)	$	16,537
Depreciation and amortization	1,629		143			—			1,772		15			—			1,787
Interest income	21		1			—			22		19			(1		)	40
Interest expense	757		63			—			820		39			—			859
Income taxes	1,307		93			—			1,400		(66		)	—			1,334
Segment net income (loss)(a)	2,145		175			1			2,321		33			(4		)	2,350
Total assets	58,600		3,780			(129		)	62,251		1,116			(218		)	63,149
Gross property additions	4,813		241			—			5,054		5			—			5,059

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

(b) Segment net income (loss) for the traditional operating companies in 2014 and 2013 includes $868 million in pre-tax charges ($536 million after tax) and $1.2 billion in pre-tax charges ($729 million after tax), respectively, for estimated probable losses on the Kemper IGCC. See Note 3 under "Integrated Coal Gasification Combined Cycle – Kemper IGCC Schedule and Cost Estimate" for additional information.

Financial data for products and services

Products and Services

Electric Utilities' Revenues
Year	Retail	Wholesale	Other	Total
	(in millions)
2014	$15,550	$2,184	$672	$18,406
2013	14,541	1,855	639	17,035
2012	14,187	1,675	616	16,478