LONG-TERM AND SHORT-TERM DEBT (Details) (USD $) In Millions, unless otherwise specified																			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014 Credit Suisse AG, Cayman Islands Branch (Member)	Mar. 31, 2014 Branch Banking Trust Company [Member]	Mar. 31, 2014 SCE&G (including Fuel Company)	Dec. 31, 2013 SCE&G (including Fuel Company)	Mar. 31, 2014 SCE&G (including Fuel Company) Credit Suisse AG, Cayman Islands Branch (Member)	Mar. 31, 2014 SCE&G (including Fuel Company) Branch Banking Trust Company [Member]	Mar. 31, 2014 SCEG	Dec. 31, 2013 SCEG	Mar. 31, 2014 SCEG Credit Suisse AG, Cayman Islands Branch (Member)	Mar. 31, 2014 SCEG Branch Banking Trust Company [Member]	Mar. 31, 2014 PSNC Energy [Member]	Dec. 31, 2013 PSNC Energy [Member]	Mar. 31, 2014 Fuel Company	Dec. 31, 2013 Fuel Company	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]
Debt Instrument, Increase, Additional Borrowings																			$ 39.5	$ 14.7
Debt Instrument, Interest Rate, Stated Percentage			3.63%															5.20%			4.00%
Debt Instrument, Decrease, Repayments																				56.9
Line of Credit Facility, Maximum Borrowing Capacity	1,800					1,400	1,400			1,200				100	100	500	500
Commercial Paper						457	251							0	0
Debt, Weighted Average Interest Rate						0.26%	0.27%							0.00%	0.00%
Letters of Credit Outstanding, Amount						0.3	0.3							0	0
Line of Credit Facility, Remaining Borrowing Capacity						943	1,149							100	100
Line of Credit Facility Percentage of Credit Facilities Provided by Each Bank				8.90%	8.90%			8.90%	6.30%			8.90%	8.90%
Number of other banks (in entities)		2								2
Long-term Debt, Current Maturities	53	54								47	48
Debt Instrument, Face Amount										$ 67.8