DERIVATIVE FINANCIAL INSTRUMENTS OFFSETTING ASSETS AND LIABILITIES (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Derivative Liability	$ 289us-gaap_DerivativeLiabilities	$ 28us-gaap_DerivativeLiabilities
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative Asset	21us-gaap_DerivativeAssets	44us-gaap_DerivativeAssets
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0	(1)
Derivative Asset, Fair Value, Gross Asset	21	44
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liabilities, Net Amount	137	2
Derivative Liability, Fair Value, Gross Liability	289	28
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0	(1)
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Posted	152	25
Derivative Assets, Net Amount	21	43
Other Deferred Debits and Other Assets [Member]
Derivative [Line Items]
Derivative Asset	5	23
Other Current Assets [Member]
Derivative [Line Items]
Derivative Liability	6
Derivative Asset	16	21
Other Current Liabilities [Member]
Derivative [Line Items]
Derivative Liability	233	10
Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	50	18
Interest Rate Contract
Derivative [Line Items]
Derivative Liability	257	20
Derivative Asset		32
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments		(1)
Derivative Asset, Fair Value, Gross Asset		32
Derivative Liabilities, Net Amount	126	0
Derivative Liability, Fair Value, Gross Liability	257	20
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0	(1)
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Posted	131	19
Derivative Assets, Net Amount		31
Commodity Contracts
Derivative [Line Items]
Derivative Liability	12
Derivative Asset, Fair Value, Gross Liability	0
Derivative Asset	1	4
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0
Derivative Asset, Fair Value, Gross Asset	1	4
Derivative Liability, Fair Value, Gross Asset	0
Derivative Liabilities, Net Amount	2
Derivative Liability, Fair Value, Gross Liability	12
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Posted	10
Derivative Assets, Net Amount	1	4
Other Energy Management Contract [Member]
Derivative [Line Items]
Derivative Liability	20	8
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative Asset	20	8
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0
Derivative Asset, Fair Value, Gross Asset	20	8
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liabilities, Net Amount	9	2
Derivative Liability, Fair Value, Gross Liability	20	8
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0	0
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Posted	11	6
Derivative Assets, Net Amount	20	8
SCE&G
Derivative [Line Items]
Derivative Liability	233	2
Derivative Asset		32
SCE&G \| Other Deferred Debits and Other Assets [Member]
Derivative [Line Items]
Derivative Asset		19
SCE&G \| Other Current Assets [Member]
Derivative [Line Items]
Derivative Asset		13
SCE&G \| Other Current Liabilities [Member]
Derivative [Line Items]
Derivative Liability	208	2
SCE&G \| Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	25
SCE&G \| Interest Rate Contract
Derivative [Line Items]
Derivative Liability	233	2
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative Asset	0	32
Derivative Assets, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0	(1)
Derivative, Collateral, Obligation to Return Cash	0	0
Derivative Asset, Fair Value, Gross Asset	0	32
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liabilities, Net Amount	126	0
Derivative Liability, Fair Value, Gross Liability	233	2
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0	(1)
Derivative Liabilities, Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Posted	107	1
Derivative Assets, Net Amount	$ 0	$ 31

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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