CONSOLIDATED STATEMENTS OF COMMON EQUITY (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Dividends Declared Per Share of Common Stock (in dollars per share)			$ 1.98	$ 1.94	$ 1.90
Other Comprehensive Income (Loss), Tax			$ 5	$ (29)	$ 5
Shares, Outstanding	132	130	132	130	127	123
Stock Issued During Period, Shares, New Issues			2	3	4
Common stock issued			97	97	149
Dividends, Common Stock			(260)	(250)	(239)
Common Stock, Value, Outstanding	1,983	1,886	1,983	1,886	1,789	1,640
Retained Earnings, Unappropriated	2,257	2,097	2,257	2,097	1,960	1,823
Accumulated Other Comprehensive Income (Loss), Net of Tax	(86)	(94)	(86)	(94)	(47)	(55)
Income Available to Common Shareholders	105	98	420	387	376
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(16)	(13)	(16)	(13)
Other Comprehensive Income (Loss), Net of Tax			8	(47)	8
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			428	340	384
SCE&G (including Fuel Company)
Shares, Outstanding	40	40	40	40	40	40
Common Stock, Value, Outstanding	2,167	2,041	2,167	2,041	1,934	1,788
Retained Earnings, Unappropriated	1,766	1,627	1,766	1,627	1,505	1,407
Accumulated Other Comprehensive Income (Loss), Net of Tax	(4)	(3)	(4)	(3)	(2)	(33)
Income Available to Common Shareholders			341	306	290
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent			(1)	(1)	31
Contributions from parent			126	107	146
Dividends			(202)	(184)	(192)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			340	305	321
Genco
Stockholders' Equity Attributable to Noncontrolling Interest	114	108	114	108	104	97
Net Income (Loss) Attributable to Noncontrolling Interest			11	10	14
Contributions from parent			2
Dividends			(7)	(6)	(7)
SCE&G
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Benefit Plan Improvement, Tax Effect			0	0	19
Stockholders' Equity Attributable to Noncontrolling Interest	114	108	114	108
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,043	3,773	4,043	3,773	3,541	3,259
Net Income (Loss) Attributable to Noncontrolling Interest			11	10	14
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			352	316	304
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent			(1)	(1)	31
Contributions from parent			128	107	146
Dividends			(209)	(190)	(199)
Other Comprehensive Income (Loss), Net of Tax			(1)	(1)	31
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			$ 351	$ 315	$ 335