COMMON EQUITY (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	May 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Capitalization, Equity [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax		$ (52)	$ (70)	$ (81)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax		(8)	(16)	(13)
Other Comprehensive Income (Loss), Net of Tax		8.0	(3.0)	(2.0)
Retained Earnings, Appropriated		63.1	61.0
Common Stock, Shares Authorized		200,000,000	200,000,000
COMMON EQUITY [Abstract]
Dividends declared		284	260	250
Total Comprehensive Income (Loss)		497	428	340
Common Stock, Dividends, Per Share, Declared		$ 2.03	$ 1.98	$ 1.94
Other comprehensive income (loss), unrealized holding gain (loss) net of reclassification to AOCI arising during period, net of tax		18	11
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax		7	(8)	(58)
Proceeds from exercise of equity forward sales agreements		196.2
Losses on cash flow hedging activities reclassified to net income		(11)	(19)	(13)
Common stock issued through various compensation and dividend reinvestment plans, including the Stock Purchase Savings Plan		100.9	97.7	97.8
Common stock issued		297	97	97
Number of shares underlying forward sales contracts (in shares)	6,600,000
Common equity		4,664	4,154	3,889	3,702
SCE&G
Schedule of Capitalization, Equity [Line Items]
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax		(3)	(4)	(3)
Other Comprehensive Income (Loss), Net of Tax		1.0	(1.0)
Retained Earnings, Appropriated		63.1	61.0
Common Stock, Shares Authorized		50,000,000	50,000,000
COMMON EQUITY [Abstract]
Stockholders' Equity Attributable to Noncontrolling Interest		117	114
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		4,489	4,043	3,773	3,541
Contributions from parent		311	128	107
Dividends		257	209	190
Total Comprehensive Income (Loss)		392	351	315
Preferred Stock, Shares Authorized		20,000,000	20,000,000
Preferred Stock, Shares Outstanding		1,000	1,000
Common equity		$ 4,372	$ 3,929