SEGMENT OF BUSINESS INFORMATION (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting Information [Line Items]

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

Disclosure of Reportable Segments 

The Company:

Millions of dollars	Electric Operations			Gas Distribution		Gas Marketing		All Other			Adjustments/ Eliminations			Consolidated Total
2018
External Revenue	$	2,322		$	934	$	796	—			—			$	4,052
Intersegment Revenue	5			1		139		$	470		$	(615	)	—
Operating Income (Loss)	(894		)	173		n/a		—			(8		)	(729		)
Interest Expense	18			37		1		—			328			384
Depreciation and Amortization	307			94		2		15			(15		)	403
Income Tax Expense (Benefit)	9			26		15		(25		)	(437		)	(412		)
Net Income (Loss)	n/a			n/a		43		(90		)	(481		)	(528		)
Segment Assets	7,988			3,517		305		1,212			4,632			17,654
Expenditures for Assets	973			345		2		8			(438		)	890
Deferred Tax Assets	4			17		2		—			(23		)	—
2017
External Revenue	$	2,659		$	874	$	874	—			—			$	4,407
Intersegment Revenue	5			2		127		$	389		$	(523	)	—
Operating Income (Loss)	(154		)	187		n/a		—			52			85
Interest Expense	19			28		1		—			315			363
Depreciation and Amortization	295			85		2		16			(16		)	382
Income Tax Expense (Benefit)	8			41		25		(7		)	(179		)	(112		)
Net Income (Loss)	n/a			n/a		27		(46		)	(100		)	(119		)
Segment Assets	11,979			3,259		230		1,042			2,229			18,739
Expenditures for Assets	216			417		2		7			583			1,225
Deferred Tax Assets	6			25		9		—			(40		)	—
2016
External Revenue	$	2,614		$	788	$	825	—			—			$	4,227
Intersegment Revenue	5			2		111		$	414		$	(532	)	—
Operating Income	969			149		n/a		—			49			1,167
Interest Expense	17			25		1		—			299			342
Depreciation and Amortization	287			82		2		16			(16		)	371
Income Tax Expense	8			32		19		—			212			271
Net Income (Loss)	n/a			n/a		30		(18		)	583			595
Segment Assets	11,929			2,892		230		1,124			2,532			18,707
Expenditures for Assets	1,275			276		2		11			15			1,579

Deferred Tax Assets 9 32 11 — (52 ) —

SCE&G

Segment Reporting Information [Line Items]

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

Consolidated SCE&G:

Millions of dollars	Electric Operations			Gas Distribution		Adjustments/ Eliminations			Consolidated Total
2018
External Revenue	$	2,327		$	435	—			$	2,762
Operating Income (Loss)	(894		)	63		—			(831		)
Interest Expense	18			—		$	285		303
Depreciation and Amortization	307			32		(12		)	327
Segment Assets	7,988			934		6,041			14,963
Expenditures for Assets	973			90		(430		)	633
Deferred Tax Assets	4			n/a		(4		)	—
2017
External Revenue	$	2,664		$	406	—			$	3,070
Operating Income (Loss)	(154		)	71		—			(83		)
Interest Expense	19			—		$	269		288
Depreciation and Amortization	295			30		(13		)	312
Segment Assets	11,979			869		3,098			15,946
Expenditures for Assets	216			65		647			928
Deferred Tax Assets	6			n/a		(6		)	—
2016
External Revenue	$	2,619		$	367	—			$	2,986
Operating Income	969			56		—			1,025
Interest Expense	17			—		$	253		270
Depreciation and Amortization	287			28		(13		)	302
Segment Assets	11,929			825		3,337			16,091
Expenditures for Assets	1,275			78		46			1,399
Deferred Tax Assets	9			n/a		(9		)	—