INCOME TAXES INCOME TAXES (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Investments, Owned, Federal Income Tax Note [Line Items]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 2
Deferred Tax Assets, Net [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	143	115
Deferred tax Nuclear Decommissioning	214	181
Deferred Tax Assets, Financial Instruments	43	50
Deferred Tax Asset, Unamortized Investment, Tax Credits	22	29
Deferred Tax Unbilled Revenue	14	19
Deferred Tax Assets, Monetization of Bankruptcy Claims	12	13
Deferred Tax Liabilities, Tax Deferred Expense Compensation and Benefits, Employee Benefits	148	128
Deferred Tax Assets, Other	15	21
Deferred Tax Assets, Net	463	428
Deferred Tax Liabilities, Gross [Abstract]
Deferred Tax Liabilities, Property, Plant and Equipment	1,718	1,589
Deferred Tax Liabilities, Pension Plan Income		106
Deferred Tax Liabilities, Deferred Expense Fuel Costs	48	47
Deferred Tax Liabilities, Other	78	65
Deferred Tax Liabilities, Gross	2,105	1,935
Deferred Tax Liabilities, Net, Noncurrent	1,642	1,507
Deferred Tax Liabilities, Regulatory Assets	113
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	0
Gross increases current period tax positions	0
Settlements	0	0
Lapse of statute of limitations	0
SCE&G
Deferred Tax Assets, Net [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	73	55
Deferred tax Nuclear Decommissioning	204	171
Deferred Tax Asset, Unamortized Investment, Tax Credits	21	29
Deferred Tax Unbilled Revenue	14	19
Deferred Tax Liabilities, Tax Deferred Expense Compensation and Benefits, Employee Benefits	127	110
Deferred Tax Assets, Other	13	18
Deferred Tax Assets, Net	325	292
Deferred Tax Liabilities, Gross [Abstract]
Deferred Tax Liabilities, Property, Plant and Equipment	1,461	1,348
Deferred Tax Liabilities, Deferred Expense Fuel Costs	49	48
Deferred Tax Liabilities, Other	60	49
Deferred Tax Liabilities, Gross	1,804	1,655
Deferred Tax Liabilities, Net, Noncurrent	1,479	1,363
Deferred Tax Liabilities, Regulatory Assets	107	100
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions		5
Gross decreases tax positions in prior period	(38)	(8)
Gross increases current period tax positions		5
Balance at the end of the period	$ 0	$ 38	$ 36