XML 39 R42.htm IDEA: XBRL DOCUMENT v2.4.1.9
RATE AND OTHER REGULATORY MATTERS GAS (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2012
Entity Information [Line Items]    
Public Utilities, Percent Increase (Decrease) in Retail Natural Gas Rates 0.60%scg_PublicUtilitiesPercentIncreaseDecreaseInRetailNaturalGasRates 2.10%scg_PublicUtilitiesPercentIncreaseDecreaseInRetailNaturalGasRates
Public Utilities changes in Retail Natural Gas Rates Approved under RSA $ 2.6scg_PublicUtilitieschangesinRetailNaturalGasRatesApprovedunderRSA $ 7.5scg_PublicUtilitieschangesinRetailNaturalGasRatesApprovedunderRSA
Public Utilities, Rate Calculation Basis 12  
SCE&G    
Entity Information [Line Items]    
Public Utilities, Percent Increase (Decrease) in Retail Natural Gas Rates 0.60%scg_PublicUtilitiesPercentIncreaseDecreaseInRetailNaturalGasRates
/ dei_LegalEntityAxis
= scg_ScegMember		 2.10%scg_PublicUtilitiesPercentIncreaseDecreaseInRetailNaturalGasRates
/ dei_LegalEntityAxis
= scg_ScegMember
Public Utilities changes in Retail Natural Gas Rates Approved under RSA $ 2.6scg_PublicUtilitieschangesinRetailNaturalGasRatesApprovedunderRSA
/ dei_LegalEntityAxis
= scg_ScegMember		 $ 7.5scg_PublicUtilitieschangesinRetailNaturalGasRatesApprovedunderRSA
/ dei_LegalEntityAxis
= scg_ScegMember
Public Utilities, Rate Calculation Basis 12