SEGMENT OF BUSINESS INFORMATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Electric Domestic Regulated Revenue	$ 714	$ 728	$ 1,851	$ 1,903
Intersegment Revenue	0	0	0
Operating Income	238	215	647	605
Regulated Operating Revenue, Gas	109	115	513	613
Regulated and Unregulated Operating Revenue	1,038	1,092	3,054	3,374
Income Available to Common Shareholders of SCANA	122	105	315	289
Segment Assets	13,964		13,964		13,534
Electric Operations
Segment Reporting Information [Line Items]
Intersegment Revenue	2	2	7	6
Operating Income	243	225	534	487
Segment Assets	8,750		8,750		8,222
Gas Distribution
Segment Reporting Information [Line Items]
Intersegment Revenue	0	1		1
Operating Income	(7)	(11)	81	75
Regulated and Unregulated Operating Revenue	107	114	507	606
Segment Assets	2,208		2,208		2,179
Retail Gas Marketing
Segment Reporting Information [Line Items]
Intersegment Revenue	0	0	0
Regulated and Unregulated Operating Revenue	64	68	288	348
Income Available to Common Shareholders of SCANA	(5)	(5)	3	14
Segment Assets	121		121		185
Energy Marketing
Segment Reporting Information [Line Items]
Intersegment Revenue	35	49	84	146
Regulated and Unregulated Operating Revenue	151	180	402	510
Income Available to Common Shareholders of SCANA	1	2	5	4
Segment Assets	91		91		114
All Other [member]
Segment Reporting Information [Line Items]
Intersegment Revenue	100	102	309	308
Operating Income	6	5	17	13
Regulated and Unregulated Operating Revenue	11	10	32	30
Income Available to Common Shareholders of SCANA	(3)	(6)	(2)	(5)
Segment Assets	1,276		1,276		1,377
Adjustments/Eliminations
Segment Reporting Information [Line Items]
Intersegment Revenue	(137)	(154)	(400)	(461)
Operating Income	(4)	(4)	15	30
Regulated and Unregulated Operating Revenue	(9)	(8)	(26)	(23)
Income Available to Common Shareholders of SCANA	129	114	309	276
Segment Assets	1,518		1,518		1,457
SCE&G
Segment Reporting Information [Line Items]
Electric Domestic Regulated Revenue	716	730	1,857	1,908
Regulated Operating Revenue	777	797	2,101	2,193
Operating Income	241	220	561	509
Regulated Operating Revenue, Gas	61	67	244	285
Net Income (Loss) Attributable to Parent	129	117	272	244
Segment Assets	11,630		11,630		11,037
SCE&G \| Electric Operations
Segment Reporting Information [Line Items]
Operating Income	244	225	534	487
Segment Assets	8,750		8,750		8,222
SCE&G \| Gas Distribution
Segment Reporting Information [Line Items]
Operating Income	(3)	(5)	27	23
Segment Assets	648		648		622
SCE&G \| Adjustments/Eliminations
Segment Reporting Information [Line Items]
Operating Income	0	0		(1)
Net Income (Loss) Attributable to Parent	129	117	272	244
Segment Assets	$ 2,232		$ 2,232		$ 2,193

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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