RATE AND OTHER REGULATORY MATTERS (Details) (USD $)	3 Months Ended			12 Months Ended					24 Months Ended
	Mar. 31, 2014	Dec. 31, 2012 MW	Jun. 30, 2011	May 01, 2015	Dec. 31, 2013	Dec. 31, 2012 MW	Dec. 31, 2011	Jul. 31, 2011	Jul. 31, 2012	Apr. 30, 2012
Rate Matters [Line Items]
Undercollected balance fuel					$ 41,600,000
Carrying cost recovery					3,000,000	0	0
Prior accrual of under collected fuel					8,500,000
Public Utilities, Percent Increase (Decrease) in Retail Natural Gas Rates						2.10%	2.10%
SCE&G
Rate Matters [Line Items]
Undercollected balance fuel					41,600,000					80,600,000
Carrying cost recovery					2,900,000	0	0
Gain (Loss) on Sale of Derivatives					8,500,000
Public Utilities Base Fuel under Collected Balance Recovery Period					12
Public Utilities, Percent Increase (Decrease) in Retail Electric Rates		4.23%			2.90%	2.30%	2.40%
Allowable return on common equity (as a percent)		10.25%			11.00%
Prior accrual of under collected fuel					8,500,000
Number of coal fired units to be retired		6				6
Number of coal fired units retired					2	1
Demand Side Management Program Costs, Noncurrent		19,600,000			16,900,000	19,600,000	7,000,000
Regulatory Asset Recovery Assessments				12
Derivative, Gain on Derivative	17.8
Storm Damage Reserve Cost Applied	5
Estimated Offset From Interest Rate Regulatory Liability	5.5
Share in Approved Capital Costs			173,900,000			8,000,000
Public Utilities Stipulations Related to Rate Matters Credit Offset by Amortization of Weather Related Revenues Benenefits Exhausted								48,700,000
Public Utilities, Property, Plant and Equipment Identifiable Capital Costs						278,000,000
Capital Cost Related to New Federal Healthcare Etc.						1,000,000
Public Utilities Additional Labor Expenses for Oversight of New Units						132,000,000
Increase (decrease) in retail electric rate requested under the BLRA					67,200,000	52,100,000	52,800,000
Public Utilities changes in Retail Natural Gas Rates Requested and Approved under RSA						$ 7,500,000	$ 8,600,000
Basis for rate calculation					12
power generation capacity six coal fired units		730				730
Public Utilities Stipulations Related to Rate Matters Credit Off Set by Amortization of Weather Related Revenues Length of Period									2
PSNC Energy
Rate Matters [Line Items]
Basis for rate calculation					12
Utility Plant [Domain] | SCE&G
Rate Matters [Line Items]
Regulatory assets, expected recovery period (in years)					14