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

No definition available.

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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

-Publisher FASB

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-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13(2))

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-Publisher SEC

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

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-Name Regulation S-X (SX)

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-Publisher FASB

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-Paragraph 1

-Subparagraph (SX 210.5-02.19(a)(3))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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- Definition

Increase for additional borrowings on the debt instrument during the period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Publisher FASB

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-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

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- Definition

Interest rate stated in the contractual debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

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-Paragraph 1

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

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- Definition

Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time.

+ References

No definition available.

+ Details

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- Definition

Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 12

-Subparagraph 3

-Article 6

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-Paragraph 1

-Subparagraph (SX 210.5-02.19(a))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Subparagraph a

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 4

-Section 08

-Paragraph k

-Subparagraph 1

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 2

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

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-Topic 850

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-Subparagraph (d)

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+ Details

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Data Type:	xbrli:monetaryItemType
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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

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- 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.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 2, 4

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-Topic 210

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-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

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-Subparagraph (SX 210.5-02.19(b),22(b))

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LONG-TERM AND SHORT-TERM DEBT (Details 2) (USD $) In Millions, unless otherwise specified																														3 Months Ended		3 Months Ended
	Jun. 30, 2012	Jun. 30, 2012 PSNC Energy	Jun. 30, 2012 SCE&G (including Fuel Company)	Jun. 30, 2012 Fuel Company	Jun. 30, 2012 Parent Company [Member]	Jun. 30, 2012 Wells Fargo Bank, National Association (Member)	Jun. 30, 2012 Bank of America, N.A. (Member)	Jun. 30, 2012 Morgan Stanly Bank, N.A. (Member)	Jun. 30, 2012 Branch Banking and Trust Company (Member)	Jun. 30, 2012 Credit Suisse AG, Cayman Islands Branch (Member)	Jun. 30, 2012 JPMorgan Chase Bank, N.A. (Member)	Jun. 30, 2012 Mizuho Corporate Bank, Ltd (Member)	Jun. 30, 2012 TD Bank, N.A. (Member)	Jun. 30, 2012 UBS Loan Finance LLC (Member)	Jun. 30, 2012 Deutsche Bank AG, New York Branch (Member)	Jun. 30, 2012 Union Bank, N.A. (Member)	Jun. 30, 2012 US Bank National Association (Member)	Jun. 30, 2012 SCE&G	Dec. 31, 2011 SCE&G	Jun. 30, 2012 Parent Company [Member]	Dec. 31, 2011 Parent Company [Member]	Jun. 30, 2012 Retail Gas Marketing and Energy Marketing	Dec. 31, 2011 Retail Gas Marketing and Energy Marketing	Jun. 30, 2012 SCE&G (including Fuel Company)	Dec. 31, 2011 SCE&G (including Fuel Company)	Jun. 30, 2012 SCE and G [Member]	Jun. 30, 2012 SCE and G [Member] Deutsche Bank AG, New York Branch (Member)	Jun. 30, 2012 PSNC Energy	Dec. 31, 2011 PSNC Energy	Jun. 30, 2012 First Mortgage Bonds [Member]	Jun. 30, 2012 First Mortgage Bonds [Member] SCE&G	Jun. 30, 2012 Medium Term Notes First [Member]	Jun. 30, 2012 Medium Term Notes First [Member] SCE and G [Member]	Jun. 30, 2012 Medium-term Notes [Member]
Debt Instrument [Line Items]
Due to Affiliate, Current																		$ 128.0	$ 136.0			$ 10.0	$ 13.2
Debt Instruments [Abstract]
Debt Instrument, Increase, Additional Borrowings																														250		250	250
Debt Instrument, Interest Rate, Stated Percentage																															4.35%	4.125%		6.25%
Face value of Industrial Revenue Bonds issued, proceeds of which were availed as loan																										67.8
Lines of credit:
Line of Credit Facility, Maximum Borrowing Capacity	1,500	100	1,100	400	300															300	300				1,100	1,100		100	100
Commercial Paper																				84	131			586	512			0	10
Commercial paper, weighted average interest rate (as a percent)																				0.88%	0.63%			0.49%	0.56%			0.00%	0.57%
Letters of credit supported by LOC																				3.0	3.0			0	0			0	0
Line of Credit Facility, Remaining Borrowing Capacity																				213	166			514	588			100	90
LOC advances																				$ 0	$ 0			$ 0	$ 0			$ 0	$ 0
Line of Credit Facility Percentage of Credit Facilities Provided by Each Bank						10.00%	10.00%	10.00%	8.00%	8.00%	8.00%	8.00%	8.00%	8.00%	5.30%	5.30%	5.30%										5.30%
Number of other banks (in entities)	3