SEGMENT OF BUSINESS INFORMATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Electric Domestic Regulated Revenue	$ 610	$ 610	$ 1,289	$ 1,193
Intersegment Revenue	0	0	0	0
Operating Income	154	189	504	482
Regulated Operating Revenue, Gas	150	158	608	540
Regulated and Unregulated Operating Revenue	1,026	1,016	2,616	2,327
Income Available to Common Shareholders of SCANA	96	85	289	237
Segment Assets	15,626		15,626		15,164
Electric Operations
Segment Reporting Information [Line Items]
Electric Domestic Regulated Revenue	610	610	1,289	1,193
Intersegment Revenue	2	2	4	4
Operating Income	143	178	341	331
Segment Assets	9,723		9,723		9,488
Gas Distribution
Segment Reporting Information [Line Items]
Intersegment Revenue	0	0	0	0
Operating Income	7	7	104	100
Regulated and Unregulated Operating Revenue	146	155	601	534
Segment Assets	2,372		2,372		2,340
Retail Gas Marketing
Segment Reporting Information [Line Items]
Intersegment Revenue	0	0	0	0
Regulated and Unregulated Operating Revenue	79	79	299	258
Income Available to Common Shareholders of SCANA	(3)	(3)	19	19
Segment Assets	122		122		172
Energy Marketing [Member]
Segment Reporting Information [Line Items]
Intersegment Revenue	54	47	107	89
Regulated and Unregulated Operating Revenue	187	169	420	336
Income Available to Common Shareholders of SCANA	0	1	7	4
Segment Assets	129		129		133
All Other [member]
Segment Reporting Information [Line Items]
Intersegment Revenue	104	101	214	208
Operating Income	6	6	14	13
Regulated and Unregulated Operating Revenue	9	7	18	19
Income Available to Common Shareholders of SCANA	(2)	(2)	2	1
Segment Assets	1,385		1,385		1,378
Adjustments/Eliminations
Segment Reporting Information [Line Items]
Intersegment Revenue	(160)	(150)	(325)	(301)
Operating Income	(2)	(2)	45	38
Regulated and Unregulated Operating Revenue	(5)	(4)	(11)	(13)
Income Available to Common Shareholders of SCANA	101	89	261	213
Segment Assets	1,895		1,895		1,653
SCEG
Segment Reporting Information [Line Items]
Electric Domestic Regulated Revenue	612	612	1,292	1,197
Operating Income	145	180	383	371
Regulated Operating Revenue, Gas	86	84	265	227
Net Income (Loss) Attributable to Parent	96	85	219	174
Segment Assets	13,209		13,209		12,700
Regulated Operating Revenue	698	696	1,557	1,424
SCEG | Electric Operations
Segment Reporting Information [Line Items]
Electric Domestic Regulated Revenue	612	612	1,292	1,197
Operating Income	143	178	341	331
Segment Assets	9,724		9,724		9,488
SCEG | Gas Distribution
Segment Reporting Information [Line Items]
Operating Income	2	2	42	40
Regulated Operating Revenue, Gas	86	84	265	227
Segment Assets	698		698		686
SCEG | Adjustments/Eliminations
Segment Reporting Information [Line Items]
Operating Income	0	0	0	0
Net Income (Loss) Attributable to Parent	96	85	219	174
Segment Assets	2,787		2,787		2,526
Regulated Operating Revenue	$ 0	$ 0	$ 0	$ 0