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

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Period Type:	duration

- Definition

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

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- Definition

The term of the credit agreements relating to the credit facilities.

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- Definition

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

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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

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

- Definition

Decrease for amounts repaid on the debt instrument for 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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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
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Balance Type:	debit
Period Type:	duration

- 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)
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-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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

- Definition

Interest rate stated in the contractual debt agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
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-Subparagraph (SX 210.5-02.22(a)(1))
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Balance Type:	na
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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.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

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

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

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

- Definition

The effective interest rate at the end of the reporting period.

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
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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
-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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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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LONG-TERM DEBT AND LIQUIDITY (Details) (USD $) In Millions, unless otherwise specified		1 Months Ended							3 Months Ended		3 Months Ended
	Jun. 30, 2011	Feb. 28, 2011 PSNC Energy 4.59 % unsecured senior notes due February 14, 2021	May 31, 2011 SCE&G 5.45 % first mortgage bonds	Jan. 31, 2011 SCE&G 5.45 % first mortgage bonds	May 31, 2011 4.75% medium term notes due May 15, 2021 SCANA	May 31, 2011 6.875% medium term notes SCANA	Feb. 28, 2011 Medium term notes due February 15, 2011	Jan. 31, 2011 SCE&G First Mortgage Bonds due February 1, 2011	Jun. 30, 2011 Line of credit	Jun. 30, 2011 Line of credit Fuel Company	Jun. 30, 2011 Commercial paper	Jun. 30, 2011 Commercial paper SCANA	Dec. 31, 2010 Commercial paper SCANA	Jun. 30, 2011 Commercial paper SCE&G (including Fuel Company)	Dec. 31, 2010 Commercial paper SCE&G (including Fuel Company)	Jun. 30, 2011 SCANA	Dec. 31, 2010 SCANA	Jun. 30, 2011 SCE&G (including Fuel Company)	Dec. 31, 2010 SCE&G (including Fuel Company)	Jun. 30, 2011 PSNC Energy	Dec. 31, 2010 PSNC Energy	Jun. 30, 2011 Wells Fargo Bank, National Association	Jun. 30, 2011 Bank of America, N.A.	Jun. 30, 2011 Morgan Stanly Bank, N.A.	Jun. 30, 2011 Branch Banking and Trust Company	Jun. 30, 2011 Credit Suisse AG, Cayman Islands Branch	Jun. 30, 2011 JPMorgan Chase Bank, N.A.	Jun. 30, 2011 Mizuho Corporate Bank, Ltd	Jun. 30, 2011 TD Bank, N.A.	Jun. 30, 2011 UBS Loan Finance LLC	Jun. 30, 2011 Deutsche Bank AG, New York Branch	Jun. 30, 2011 Union Bank, N.A.	Jun. 30, 2011 US Bank National Association	Jun. 30, 2011 Three other banks
Long-term Debt
Face amount of debt issued		$ 150	$ 100	$ 250	$ 300
Retirement of debt						300	150	150
Stated interest rate (as a percent)		4.59%	5.45%	5.45%	4.75%	6.875%
Lines of credit:
Committed long-term line of credit, Total	1,500									400						300	300	1,100	1,100	100	100
LOC advances																0		0		0
LOC advances, weighted average interest rate (as a percent)																0.00%		0.00%		0.00%
Outstanding commercial paper (270 or fewer days)												71	39	475	381
Commercial paper, weighted average interest rate (as a percent)												0.35%	0.35%	0.35%	0.42%
Commercial paper, maximum term											270D
Letters of credit supported by LOC																3.0	3.0	0.3	0.3
Available amount under lines of credit																226	258	625	719	100	100
Line of credit facilities, term of credit agreements									5Y
Percentage of aggregate credit facilities provided by banks (as a percent)																						10.00%	10.00%	10.00%	8.00%	8.00%	8.00%	8.00%	8.00%	8.00%	5.30%	5.30%	5.30%	6.00%
Number of other banks																																		3
Face value of Industrial Revenue Bonds issued, proceeds of which were availed as loan	$ 68.3