AFFILIATED TRANSACTIONS	9 Months Ended
AFFILIATED TRANSACTIONS	Sep. 30, 2016
Affiliated Transactions [Line Items]
Related Party Transactions Disclosure [Text Block]	AFFILIATED TRANSACTIONS The Company and Consolidated SCE&G: SCE&G owns 40% of Canadys Refined Coal, LLC, which is involved in the manufacturing and sale of refined coal to reduce emissions. SCE&G accounts for this investment using the equity method. SCE&G’s total purchases from this affiliate were $41.8 million and $66.3 million for the three months ended September 30, 2016 and 2015, respectively, and $138.6 million and $186.0 million for the nine months ended September 30, 2016 and 2015, respectively. SCE&G’s total sales to this affiliate were $41.6 million and $65.9 million for the three months ended September 30, 2016 and 2015, respectively, and $137.8 million and $185.1 million for the nine months ended September 30, 2016 and 2015, respectively. SCE&G’s receivable from this affiliate was $4.0 million at September 30, 2016 and $12.8 million at December 31, 2015. SCE&G’s payable to this affiliate was $4.1 million at September 30, 2016 and $12.9 million at December 31, 2015.
SCEG
Affiliated Transactions [Line Items]
Related Party Transactions Disclosure [Text Block]	AFFILIATED TRANSACTIONS The Company and Consolidated SCE&G: SCE&G owns 40% of Canadys Refined Coal, LLC, which is involved in the manufacturing and sale of refined coal to reduce emissions. SCE&G accounts for this investment using the equity method. SCE&G’s total purchases from this affiliate were $41.8 million and $66.3 million for the three months ended September 30, 2016 and 2015, respectively, and $138.6 million and $186.0 million for the nine months ended September 30, 2016 and 2015, respectively. SCE&G’s total sales to this affiliate were $41.6 million and $65.9 million for the three months ended September 30, 2016 and 2015, respectively, and $137.8 million and $185.1 million for the nine months ended September 30, 2016 and 2015, respectively. SCE&G’s receivable from this affiliate was $4.0 million at September 30, 2016 and $12.8 million at December 31, 2015. SCE&G’s payable to this affiliate was $4.1 million at September 30, 2016 and $12.9 million at December 31, 2015. Consolidated SCE&G: Prior to January 31, 2015, CGT was a wholly-owned subsidiary of SCANA and transported natural gas to SCE&G to serve retail gas customers and certain electric generation requirements. SCE&G's purchases from CGT totaled approximately $3.4 million in January 2015. SCE&G purchases natural gas and related pipeline capacity from SEMI to serve its retail gas customers and certain electric generation requirements. Such purchases totaled approximately $34.8 million and $34 million for the three months ended September 30, 2016 and 2015, respectively, and $83.1 million and $101.4 million for the nine months ended September 30, 2016 and 2015, respectively. SCE&G’s payables to SEMI for such purchases were $10.9 million at September 30, 2016 and $7.5 million at December 31, 2015. SCANA Services, Inc., on behalf of itself and its parent company, provides the following services to Consolidated SCE&G, which are rendered at direct or allocated cost: information systems, telecommunications, customer support, marketing and sales, human resources, corporate compliance, purchasing, financial, risk management, public affairs, legal, investor relations, gas supply and capacity management, strategic planning, general administrative, and retirement benefits. In addition, SCANA Services processes and pays invoices for Consolidated SCE&G and is reimbursed. Costs for these services were $80.4 million and $80.8 million for the three months ended September 30, 2016 and 2015, respectively, and $236.4 million and $226.0 million for the nine months ended September 30, 2016 and 2015, respectively. Consolidated SCE&G's payables to SCANA Services for these services were $50.8 million at September 30, 2016 and $57.0 million at December 31, 2015. Consolidated SCE&G's money pool borrowings from an affiliate are described in Note 4.