SEGMENT OF BUSINESS INFORMATION (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting Information [Line Items]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Millions of dollars	External Revenue		Intersegment Revenue			Operating Income			Net Income
Three Months Ended June 30, 2015
Electric Operations	$	638	$	1		$	216		n/a
Gas Distribution	129		—			5			n/a
Retail Gas Marketing	71		—			n/a			$	(6	)
Energy Marketing	128		32			n/a			3
All Other	1		93			—			(10		)
Adjustments/Eliminations	—		(126		)	(5		)	112
Consolidated Total	$	967	$	—		$	216		$	99

Six Months Ended June 30, 2015
Electric Operations	$	1,266		$	3		$	415	n/a
Gas Distribution	497			—			101		n/a
Retail Gas Marketing	276			—			n/a		$	21
Energy Marketing	315			67			n/a		9
All Other	5			207			237		197
Adjustments/Eliminations	(3		)	(277		)	49		272
Consolidated Total	$	2,356		$	—		$	802	$	499

Three Months Ended June 30, 2014
Electric Operations	$	610		$	2		$	143		n/a
Gas Distribution	146			—			7			n/a
Retail Gas Marketing	79			—			n/a			$	(3	)
Energy Marketing	187			54			n/a			—
All Other	9			104			6			(2		)
Adjustments/Eliminations	(5		)	(160		)	(2		)	101
Consolidated Total	$	1,026		$	—		$	154		$	96

Six Months Ended June 30, 2014
Electric Operations	$	1,289		$	4		$	341	n/a
Gas Distribution	601			—			104		n/a
Retail Gas Marketing	299			—			n/a		$	19
Energy Marketing	420			107			n/a		7
All Other	18			214			14		2
Adjustments/Eliminations	(11		)	(325		)	45		261
Consolidated Total	$	2,616		$	—		$	504	$	289

	June 30,		December 31,
Segment Assets	2015		2014
Electric Operations	$	10,454	$	10,182
Gas Distribution	2,481		2,487
Retail Gas Marketing	114		140
Energy Marketing	106		150
All Other	989		1,474
Adjustments/Eliminations	2,224		2,419
Consolidated Total	$	16,368	$	16,852

SCEG

Segment Reporting Information [Line Items]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

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Millions of dollars	External Revenue		Operating Income		Earnings Available to Common Shareholder
Three Months Ended June 30, 2015
Electric Operations	$	639	$	216	n/a
Gas Distribution	70		2		n/a
Adjustments/Eliminations	—		—		$	107
Consolidated Total	$	709	$	218	$	107

Six Months Ended June 30, 2015
Electric Operations	$	1,269	$	415	n/a
Gas Distribution	212		40		n/a
Adjustments/Eliminations	—		—		$	230
Consolidated Total	$	1,481	$	455	$	230

Three Months Ended June 30, 2014
Electric Operations	$	612	$	143	n/a
Gas Distribution	86		2		n/a
Adjustments/Eliminations	—		—		$	96
Consolidated Total	$	698	$	145	$	96

Six Months Ended June 30, 2014
Electric Operations	$	1,292	$	341	n/a
Gas Distribution	265		42		n/a
Adjustments/Eliminations	—		—		$	219
Consolidated Total	$	1,557	$	383	$	219

Segment Assets	June 30, 2015		December 31, 2014
Electric Operations	$	10,454	$	10,182
Gas Distribution	741		721
Adjustments/Eliminations	2,961		3,204
Consolidated Total	$	14,156	$	14,107