AFFILIATED TRANSACTIONS	6 Months Ended
AFFILIATED TRANSACTIONS	Jun. 30, 2017
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. Consolidated SCE&G’s total purchases from this affiliate were $52.8 million and $44.0 million for the three months ended June 30, 2017 and 2016, respectively, and $97.4 million and $96.8 million for the six months ended June 30, 2017 and 2016, respectively. Consolidated SCE&G’s total sales to this affiliate were $52.5 million and $43.8 million for the three months ended June 30, 2017 and 2016, respectively, and $96.8 million and $96.2 million for the six months ended June 30, 2017 and 2016, respectively. The net of the total purchases and total sales are recorded in Other expenses on the condensed consolidated statements of income (for the Company) and of comprehensive income (for Consolidated SCE&G). Consolidated SCE&G’s receivable from this affiliate was $17.4 million at June 30, 2017 and $16.0 million at December 31, 2016. Consolidated SCE&G’s payable to this affiliate was $17.6 million at June 30, 2017 and $16.1 million at December 31, 2016.
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. Consolidated SCE&G’s total purchases from this affiliate were $52.8 million and $44.0 million for the three months ended June 30, 2017 and 2016, respectively, and $97.4 million and $96.8 million for the six months ended June 30, 2017 and 2016, respectively. Consolidated SCE&G’s total sales to this affiliate were $52.5 million and $43.8 million for the three months ended June 30, 2017 and 2016, respectively, and $96.8 million and $96.2 million for the six months ended June 30, 2017 and 2016, respectively. The net of the total purchases and total sales are recorded in Other expenses on the condensed consolidated statements of income (for the Company) and of comprehensive income (for Consolidated SCE&G). Consolidated SCE&G’s receivable from this affiliate was $17.4 million at June 30, 2017 and $16.0 million at December 31, 2016. Consolidated SCE&G’s payable to this affiliate was $17.6 million at June 30, 2017 and $16.1 million at December 31, 2016. Consolidated SCE&G: SCE&G purchases natural gas and related pipeline capacity from SCANA Energy to serve its retail gas customers and certain electric generation requirements. Such purchases totaled approximately $34.3 million and $25.9 million for the three months ended June 30, 2017 and 2016, respectively, and $58.2 million and $48.3 million for the six months ended June 30, 2017 and 2016, respectively. SCE&G’s payables to SCANA Energy for such purchases were $10.5 million at June 30, 2017 and $8.8 million at December 31, 2016. SCANA Services, 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, including amounts capitalized, totaled $82.9 million and $80.5 million for the three months ended June 30, 2017 and 2016, respectively, and $155.4 million and $156.1 million for the six months ended June 30, 2017 and 2016, respectively. Amounts expensed are recorded in Other operation and maintenance - nonconsolidated affiliate and Other expenses on the condensed consolidated statements of comprehensive income. Consolidated SCE&G's payables to SCANA Services for these services were $50.8 million at June 30, 2017 and $63.5 million at December 31, 2016. Consolidated SCE&G's money pool borrowings from an affiliate are described in Note 4. SCE&G's participation in SCANA's noncontributory defined benefit pension plan and unfunded postretirement health care and life insurance programs is described in Note 8.