COMMON EQUITY (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011		Dec. 31, 2011	Dec. 31, 2010	May 31, 2010
Schedule of Capitalization, Equity [Line Items]
Common Stock, Shares Authorized	200		200				200
COMMON EQUITY [Abstract]
Common Shareholders' Equity	$ 4,010		$ 4,010				$ 3,889
Forward Contract Indexed to Issuer's Equity, Indexed Shares									6.6
Dividends declared			(130)		(124)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	74	42	201	[1]	177	[1]
Common Stock, Shares, Outstanding	131.0		131.0				129.9
Losses recognized on cash flow hedges, net of tax	(4)	(1)	(14)		(6)
Common stock issued			50		50
Common Stockholders' Equity		3,805			3,805			3,702
SCE&G
Schedule of Capitalization, Equity [Line Items]
Common Stock, Shares Authorized	50		50				50
COMMON EQUITY [Abstract]
Stockholders' Equity Attributable to Noncontrolling Interest	110		110				108
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,866	3,622	3,866		3,622		3,773	3,541
Contributions from parent			51		49
Dividends			(107)		(100)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			149		132
Common Stock, Shares, Outstanding	40.3		40.3
SCE&G (including Fuel Company)
COMMON EQUITY [Abstract]
Contributions from parent			51		49
Dividends			(103)		(97)
Common Shareholders' Equity	3,756	3,516	3,756		3,516		3,665	3,437
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	76	59	143		127
Genco
COMMON EQUITY [Abstract]
Stockholders' Equity Attributable to Noncontrolling Interest	110	106	110		106		108	104
Contributions from parent			0		0
Dividends			(4)		(3)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent			$ 6		$ 5

[1] (1) Accumulated other comprehensive loss totaled $86.0 million as of June 30, 2012 and $93.8 million as of December 31, 2011.