SEGMENT OF BUSINESS INFORMATION

9 Months Ended

Sep. 30, 2018

Segment Reporting Information [Line Items]

Segment Reporting Disclosure [Text Block]

SEGMENT OF BUSINESS INFORMATION

Regulated operations measure profitability using operating income; therefore, net income is not allocated to the Electric Operations and Gas Distribution segments. The Gas Marketing segment measures profitability using net income.

The Company's Gas Distribution segment is comprised of the local distribution operations of SCE&G and PSNC Energy which meet the criteria for aggregation. All Other includes the parent company, a services company and other nonreportable segments that were insignificant for all periods presented.

The Company
Millions of dollars	External Revenue		Intersegment Revenue			Operating Income (Loss)			Net Income
Three Months Ended September 30, 2018
Electric Operations	$	669	—			$	217		n/a
Gas Distribution	122		—			(10		)	n/a
Gas Marketing	135		$	35		n/a			$	1
All Other	—		124			—			(30		)
Adjustments/Eliminations	—		(159		)	(24		)	96
Consolidated Total	$	926	—			$	183		$	67
Nine Months Ended September 30, 2018
Electric Operations	$	1,767	$	3		$	396		n/a
Gas Distribution	631		1			107			n/a
Gas Marketing	550		95			n/a			$	21
All Other	—		347			—			(79		)
Adjustments/Eliminations	—		(446		)	(28		)	302
Consolidated Total	$	2,948	—			$	475		$	244

Three Months Ended September 30, 2017
Electric Operations	$	786	$	1		$	127		n/a
Gas Distribution	123		—			(7		)	n/a
Gas Marketing	167		35			n/a			$	1
All Other	—		90			—			(7		)
Adjustments/Eliminations	—		(126		)	2			40
Consolidated Total	$	1,076	—			$	122		$	34
Nine Months Ended September 30, 2017
Electric Operations	$	2,042	$	4		$	555		n/a
Gas Distribution	584		1			110			n/a
Gas Marketing	623		93			n/a			$	17
All Other	—		286			—			(14		)
Adjustments/Eliminations	—		(384		)	28			323
Consolidated Total	$	3,249	—			$	693		$	326

Consolidated SCE&G
Millions of dollars	External Revenue		Operating Income (Loss)			Comprehensive Income Available to Common Shareholder
Three Months Ended September 30, 2018
Electric Operations	$	670	$	216		n/a
Gas Distribution	69		(4		)	n/a
Adjustments/Eliminations	—		—			$	98
Consolidated Total	$	739	$	212		$	98
Nine Months Ended September 30, 2018
Electric Operations	$	1,770	$	396		n/a
Gas Distribution	304		44			n/a
Adjustments/Eliminations	—		—			$	248
Consolidated Total	$	2,074	$	440		$	248

Three Months Ended September 30, 2017
Electric Operations	$	787	$	126		n/a
Gas Distribution	69		(2		)	n/a
Adjustments/Eliminations	—		—			$	39
Consolidated Total	$	856	$	124		$	39
Nine Months Ended September 30, 2017
Electric Operations	$	2,046	$	555		n/a
Gas Distribution	285		42			n/a
Adjustments/Eliminations	—		—			$	270
Consolidated Total	$	2,331	$	597		$	270

Segment Assets	The Company				Consolidated SCE&G
	September 30,		December 31,		September 30,		December 31,
Millions of dollars	2018		2017		2018		2017
Electric Operations	$	12,046	$	11,979	$	12,046	$	11,979
Gas Distribution	3,384		3,259		909		869
Gas Marketing	204		230		n/a		n/a
All Other	1,071		1,042		n/a		n/a
Adjustments/Eliminations	2,111		2,229		3,174		3,098
Consolidated Total	$	18,816	$	18,739	$	16,129	$	15,946

SCEG

Segment Reporting Information [Line Items]

Segment Reporting Disclosure [Text Block]

SEGMENT OF BUSINESS INFORMATION

Regulated operations measure profitability using operating income; therefore, net income is not allocated to the Electric Operations and Gas Distribution segments. The Gas Marketing segment measures profitability using net income.

The Company's Gas Distribution segment is comprised of the local distribution operations of SCE&G and PSNC Energy which meet the criteria for aggregation. All Other includes the parent company, a services company and other nonreportable segments that were insignificant for all periods presented.

The Company
Millions of dollars	External Revenue		Intersegment Revenue			Operating Income (Loss)			Net Income
Three Months Ended September 30, 2018
Electric Operations	$	669	—			$	217		n/a
Gas Distribution	122		—			(10		)	n/a
Gas Marketing	135		$	35		n/a			$	1
All Other	—		124			—			(30		)
Adjustments/Eliminations	—		(159		)	(24		)	96
Consolidated Total	$	926	—			$	183		$	67
Nine Months Ended September 30, 2018
Electric Operations	$	1,767	$	3		$	396		n/a
Gas Distribution	631		1			107			n/a
Gas Marketing	550		95			n/a			$	21
All Other	—		347			—			(79		)
Adjustments/Eliminations	—		(446		)	(28		)	302
Consolidated Total	$	2,948	—			$	475		$	244

Three Months Ended September 30, 2017
Electric Operations	$	786	$	1		$	127		n/a
Gas Distribution	123		—			(7		)	n/a
Gas Marketing	167		35			n/a			$	1
All Other	—		90			—			(7		)
Adjustments/Eliminations	—		(126		)	2			40
Consolidated Total	$	1,076	—			$	122		$	34
Nine Months Ended September 30, 2017
Electric Operations	$	2,042	$	4		$	555		n/a
Gas Distribution	584		1			110			n/a
Gas Marketing	623		93			n/a			$	17
All Other	—		286			—			(14		)
Adjustments/Eliminations	—		(384		)	28			323
Consolidated Total	$	3,249	—			$	693		$	326

Consolidated SCE&G
Millions of dollars	External Revenue		Operating Income (Loss)			Comprehensive Income Available to Common Shareholder
Three Months Ended September 30, 2018
Electric Operations	$	670	$	216		n/a
Gas Distribution	69		(4		)	n/a
Adjustments/Eliminations	—		—			$	98
Consolidated Total	$	739	$	212		$	98
Nine Months Ended September 30, 2018
Electric Operations	$	1,770	$	396		n/a
Gas Distribution	304		44			n/a
Adjustments/Eliminations	—		—			$	248
Consolidated Total	$	2,074	$	440		$	248

Three Months Ended September 30, 2017
Electric Operations	$	787	$	126		n/a
Gas Distribution	69		(2		)	n/a
Adjustments/Eliminations	—		—			$	39
Consolidated Total	$	856	$	124		$	39
Nine Months Ended September 30, 2017
Electric Operations	$	2,046	$	555		n/a
Gas Distribution	285		42			n/a
Adjustments/Eliminations	—		—			$	270
Consolidated Total	$	2,331	$	597		$	270

Segment Assets	The Company				Consolidated SCE&G
	September 30,		December 31,		September 30,		December 31,
Millions of dollars	2018		2017		2018		2017
Electric Operations	$	12,046	$	11,979	$	12,046	$	11,979
Gas Distribution	3,384		3,259		909		869
Gas Marketing	204		230		n/a		n/a
All Other	1,071		1,042		n/a		n/a
Adjustments/Eliminations	2,111		2,229		3,174		3,098
Consolidated Total	$	18,816	$	18,739	$	16,129	$	15,946