This element represents the maximum term of borrowings under a commercial paper program.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Represents each bank's portion of the credit facilities as a percentage of the aggregate credit facilities.

+ References

No definition available.

+ Details

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- Definition

Represents the number of other banks that lend or provide the remaining portion of the aggregate credit facilities.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

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

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

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-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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+ Details

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- Details

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Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

+ References

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

-Publisher FASB

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-Subparagraph (SX 210.9-03.16)

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-Subparagraph (SX210.5-02.22)

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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

-Publisher FASB

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-Publisher SEC

-Name Regulation S-X (SX)

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-Section 02

-Paragraph 19, 22

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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-Name Regulation S-X (SX)

-Number 210

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from amounts received from a long-term debt instrument secured by a first mortgage deed of trust, containing a pledge of real property. The lender has the highest claim on the property in case of default.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

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+ Details

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Balance Type:	debit
Period Type:	duration

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- Details

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- Details

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- Details

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- Details

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LONG-TERM AND SHORT-TERM DEBT (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2015	Jun. 30, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,800.0
Commercial Paper Maximum Term	Outstanding commercial paper (270 or fewer days)
Number of other banks (in entities)	2scg_NumberOfOtherBanks
Long-term Debt, Current Maturities	16us-gaap_LongTermDebtCurrent		166us-gaap_LongTermDebtCurrent
Debt Instrument, Interest Rate Terms	0.077
Junior Subordinated Notes	150us-gaap_JuniorSubordinatedNotes
Credit Suisse AG, Cayman Islands Branch (Member)
Debt Instrument [Line Items]
Line of Credit Facility Percentage of Credit Facilities Provided by Each Bank	8.90%
Branch Banking Trust Company [Member]
Debt Instrument [Line Items]
Line of Credit Facility Percentage of Credit Facilities Provided by Each Bank	6.30%
SCE&G (including Fuel Company)
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	1,400.0		1,400.0
Commercial Paper Maximum Term	Outstanding commercial paper (270 or fewer days)
Commercial Paper	(610)		(709)
Debt, Weighted Average Interest Rate	0.54%		0.52%
Letters of Credit Outstanding, Amount	0.3		(0.3)
Line of Credit Facility, Remaining Borrowing Capacity	790		691
SCEG
Debt Instrument [Line Items]
Proceeds from Issuance of First Mortgage Bond		300
Line of Credit Facility, Maximum Borrowing Capacity	1,200.0
Number of other banks (in entities)	2
Long-term Debt, Current Maturities	10		10
Debt Instrument, Face Amount	67.8
Debt Instrument, Interest Rate Terms		.045
SCEG \| Credit Suisse AG, Cayman Islands Branch (Member)
Debt Instrument [Line Items]
Line of Credit Facility Percentage of Credit Facilities Provided by Each Bank	8.90%
SCEG \| Branch Banking Trust Company [Member]
Debt Instrument [Line Items]
Line of Credit Facility Percentage of Credit Facilities Provided by Each Bank	8.90%
PSNC Energy [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100.0		100.0
Commercial Paper	0		(30)
Debt, Weighted Average Interest Rate	0.00%		0.65%
Letters of Credit Outstanding, Amount	0		0
Line of Credit Facility, Remaining Borrowing Capacity	100		70
Fuel Company
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 500.0