Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as cash flow hedging instruments that was deferred in regulatory accounts during the current period.

+ References

No definition available.

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- Definition

Fair value, after the effects of master netting arrangements, of a 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. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or 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. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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DERIVATIVE FINANCIAL INSTRUMENTS FAIR VALUE ON BALANCE SHEET (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Derivative Liability	$ 289us-gaap_DerivativeLiabilities	$ 28us-gaap_DerivativeLiabilities
Derivative Asset	21us-gaap_DerivativeAssets	44us-gaap_DerivativeAssets
Other Deferred Debits and Other Assets [Member]
Derivative [Line Items]
Derivative Asset	5	23
Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	50	18
Other Current Assets [Member]
Derivative [Line Items]
Derivative Liability	6
Derivative Asset	16	21
Interest Rate Contract
Derivative [Line Items]
Derivative Liability	257	20
Derivative Asset		32
Commodity Contracts
Derivative [Line Items]
Derivative Liability	12
Derivative Asset	1	4
Other Energy Management Contract [Member]
Derivative [Line Items]
Derivative Liability	20	8
Derivative Asset	20	8
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability	45	19
Derivative Asset		2
Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Derivative Liability	5	5
Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	28	14
Designated as Hedging Instrument [Member] \| Commodity Contracts \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Derivative Liability	11
Designated as Hedging Instrument [Member] \| Commodity Contracts \| Other Current Assets [Member]
Derivative [Line Items]
Derivative Liability	1
Derivative Asset		2
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability	244	9
Derivative Asset	21	42
Not Designated as Hedging Instrument [Member] \| Interest Rate Contract
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Deferred in Regulatory Accounts Effective Portion, Net	(352)	39
Derivative, Notional Amount	1,100.0	1,300.0
Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Derivative Liability	207	1
Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Deferred Debits and Other Assets [Member]
Derivative [Line Items]
Derivative Asset		19
Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	17
Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Current Assets [Member]
Derivative [Line Items]
Derivative Asset		13
Not Designated as Hedging Instrument [Member] \| Commodity Contracts \| Other Current Assets [Member]
Derivative [Line Items]
Derivative Asset	1	2
Not Designated as Hedging Instrument [Member] \| Other Energy Management Contract [Member] \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Derivative Liability	10	4
Not Designated as Hedging Instrument [Member] \| Other Energy Management Contract [Member] \| Other Deferred Debits and Other Assets [Member]
Derivative [Line Items]
Derivative Asset	5	4
Not Designated as Hedging Instrument [Member] \| Other Energy Management Contract [Member] \| Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	5	4
Not Designated as Hedging Instrument [Member] \| Other Energy Management Contract [Member] \| Other Current Assets [Member]
Derivative [Line Items]
Derivative Liability	5
Derivative Asset	15	4
Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Contract
Derivative [Line Items]
Derivative, Notional Amount	124.4	128.8
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 Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	25
SCE&G \| Other Current Assets [Member]
Derivative [Line Items]
Derivative Asset		13
SCE&G \| Interest Rate Contract
Derivative [Line Items]
Derivative Liability	233	2
Derivative Asset	0	32
SCE&G \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability	9	1
SCE&G \| Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Derivative Liability	1	1
SCE&G \| Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	8
SCE&G \| Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative Liability	224	1
Derivative Asset		32
SCE&G \| Not Designated as Hedging Instrument [Member] \| Interest Rate Contract
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Deferred in Regulatory Accounts Effective Portion, Net	(352)	39
Derivative, Notional Amount	1,100.0	1,300.0
SCE&G \| Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Derivative Liability	207	1
SCE&G \| Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Deferred Debits and Other Assets [Member]
Derivative [Line Items]
Derivative Asset		19
SCE&G \| Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Deferred Credits and Other Liabilities
Derivative [Line Items]
Derivative Liability	17
SCE&G \| Not Designated as Hedging Instrument [Member] \| Interest Rate Contract \| Other Current Assets [Member]
Derivative [Line Items]
Derivative Asset		13
SCE&G \| Cash Flow Hedging [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	36.4	36.4
Interest Expense [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Contract
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Deferred in Regulatory Accounts Effective Portion, Net	(9)	106	84
Interest Expense [Member] \| SCE&G \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Contract
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Deferred in Regulatory Accounts Effective Portion, Net	$ (9)	$ 106	$ 84