AFFILIATED TRANSACTIONS

9 Months Ended

Sep. 30, 2017

Related Party Transaction [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. The net of the total purchases and total sales are recorded in Other expenses on the consolidated statements of income (for the Company) and of comprehensive income (for Consolidated SCE&G).

	Three Months Ended September 30,				Nine Months Ended September 30,
Millions of Dollars	2017		2016		2017		2016
Purchases from Canadys Refined Coal, LLC	$	47.5	$	41.8	$	144.9	$	138.6
Sales to Canadys Refined Coal, LLC	47.2		41.6		144.0		137.8

Millions of Dollars	September 30, 2017		December 31, 2016
Receivable from Canadys Refined Coal, LLC	$	7.6	$	16.0
Payable to Canadys Refined Coal, LLC	7.7		16.1

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. 

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 include amounts capitalized. Amounts expensed are recorded in Other operation and maintenance - nonconsolidated affiliate and Other expenses on the consolidated statements of comprehensive income.

	Three Months Ended September 30,				Nine Months Ended September 30,
Millions of Dollars	2017		2016		2017		2016
Purchases from SCANA Energy	$	35.3	$	34.8	$	93.4	$	83.1
Direct and Allocated Costs from SCANA Services	78.1		80.4		233.6		236.4

Millions of Dollars	September 30, 2017		December 31, 2016
Payable to SCANA Energy	$	10.7	$	8.8
Payable to SCANA Services	45.3		63.5

Consolidated SCE&G's money pool borrowings from an affiliate are described in condensed consolidated 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 condensed consolidated Note 8.

SCEG

Related Party Transaction [Line Items]

Related Party Transactions Disclosure [Text Block]

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. 

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 include amounts capitalized. Amounts expensed are recorded in Other operation and maintenance - nonconsolidated affiliate and Other expenses on the consolidated statements of comprehensive income.

	Three Months Ended September 30,				Nine Months Ended September 30,
Millions of Dollars	2017		2016		2017		2016
Purchases from SCANA Energy	$	35.3	$	34.8	$	93.4	$	83.1
Direct and Allocated Costs from SCANA Services	78.1		80.4		233.6		236.4

Millions of Dollars	September 30, 2017		December 31, 2016
Payable to SCANA Energy	$	10.7	$	8.8
Payable to SCANA Services	45.3		63.5

Consolidated SCE&G's money pool borrowings from an affiliate are described in condensed consolidated 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 condensed consolidated Note 8.