LONG-TERM AND SHORT-TERM DEBT (Details 2) (USD $)	9 Months Ended																																	9 Months Ended									3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Mar. 31, 2013	Sep. 30, 2014 Wells Fargo Bank, National Association (Member)	Sep. 30, 2014 Bank of America, N.A. (Member)	Sep. 30, 2014 Morgan Stanly Bank, N.A. (Member)	Sep. 30, 2014 Branch Banking Trust Company [Member]	Sep. 30, 2014 Credit Suisse AG, Cayman Islands Branch (Member)	Sep. 30, 2014 JPMorgan Chase Bank, N.A. (Member)	Sep. 30, 2014 Mizuho Corporate Bank, Ltd (Member)	Sep. 30, 2014 TD Bank, N.A. (Member)	Sep. 30, 2014 UBS Loan Finance LLC (Member)	Sep. 30, 2014 Deutsche Bank AG New York Branch [Member] [Member]	Sep. 30, 2014 Union Bank, N.A. (Member)	Sep. 30, 2014 US Bank National Association (Member)	Sep. 30, 2014 Two other banks [Domain]	Sep. 30, 2014 SCEG	Dec. 31, 2013 SCEG	Sep. 30, 2014 SCEG Wells Fargo Bank, National Association (Member)	Sep. 30, 2014 SCEG Bank of America, N.A. (Member)	Sep. 30, 2014 SCEG Morgan Stanly Bank, N.A. (Member)	Sep. 30, 2014 SCEG Branch Banking Trust Company [Member]	Sep. 30, 2014 SCEG Credit Suisse AG, Cayman Islands Branch (Member)	Sep. 30, 2014 SCEG JPMorgan Chase Bank, N.A. (Member)	Sep. 30, 2014 SCEG Mizuho Corporate Bank, Ltd (Member)	Sep. 30, 2014 SCEG TD Bank, N.A. (Member)	Sep. 30, 2014 SCEG UBS Loan Finance LLC (Member)	Sep. 30, 2014 SCEG Deutsche Bank AG New York Branch [Member] [Member]	Sep. 30, 2014 SCEG Union Bank, N.A. (Member)	Sep. 30, 2014 SCEG US Bank National Association (Member)	Sep. 30, 2014 SCEG Two other banks [Domain]	Sep. 30, 2014 Parent Company [Member]	Dec. 31, 2013 Parent Company [Member]	Sep. 30, 2014 SCE&G (including Fuel Company)	Dec. 31, 2013 SCE&G (including Fuel Company)	Sep. 30, 2014 SCE&G (including Fuel Company) Wells Fargo Bank, National Association (Member)	Sep. 30, 2014 SCE&G (including Fuel Company) Branch Banking Trust Company [Member]	Sep. 30, 2014 SCE&G (including Fuel Company) Credit Suisse AG, Cayman Islands Branch (Member)	Sep. 30, 2014 Fuel Company	Sep. 30, 2014 PSNC Energy	Dec. 31, 2013 PSNC Energy	Mar. 31, 2013 Bonds [Member]	Mar. 31, 2013 Industrial Revenue Bonds issued by JEDA proceeds of which were loaned to subsidiary	Mar. 31, 2013 Industrial and Pollution Control Bonds [Member]	Jan. 31, 2013 Industrial and Pollution Control Bonds [Member]
Debt Instrument [Line Items]
Long Term Contract for Nuclear Fuel Purchase	$ 100,000,000
Due to Affiliate, Current																	116,000,000	117,000,000
Debt Instruments [Abstract]
Debt Instrument, Increase, Additional Borrowings																																											39,500,000	14,700,000
Debt Instrument, Interest Rate, Stated Percentage			3.63%																																							5.20%			4.00%
Face value of Industrial Revenue Bonds issued, proceeds of which were availed as loan																	67,800,000
Lines of credit:
Line of Credit Facility, Maximum Borrowing Capacity	1,800,000,000																1,200,000,000															300,000,000	300,000,000	1,400,000,000	1,400,000,000				500,000,000	100,000,000	100,000,000
Commercial Paper																																127,000,000	125,000,000	361,000,000	251,000,000					0	0
Commercial paper, weighted average interest rate (as a percent)																																0.35%	0.39%	0.28%	0.27%					0.00%	0.00%
Commercial Paper Maximum Term	Outstanding commercial paper (270 or fewer days)																																	Outstanding commercial paper (270 or fewer days)
Letters of credit supported by LOC																																3,000,000	3,000,000	(300,000)	300,000					0	0
Line of Credit Facility, Remaining Borrowing Capacity																																170,000,000	172,000,000	1,039,000,000	1,149,000,000					100,000,000	100,000,000
3 year credit agreement																	200,000,000																	200,000,000
Line of Credit Facility Percentage of Credit Facilities Provided by Each Bank				10.70%	10.70%	10.70%	8.90%	8.90%	8.90%	8.90%	8.90%	8.90%	6.30%	6.30%	6.30%	6.00%			10.70%	10.70%	10.70%	8.90%	8.90%	8.90%	8.90%	8.90%	8.90%	6.30%	6.30%	6.30%	6.00%					10.70%	6.30%	8.90%
Long-term Line of Credit																																		1,400,000,000
Number of other banks (in entities)	2																2
Related Party Transaction, Due from (to) Related Party, Current	20,800,000	27,300,000
Repayments of Debt																																												$ 56,900,000