FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

 Fair value measurements, and the level within the fair value hierarchyin which the measurements fall, were as follows:

	As of March 31, 2016						As of December 31, 2015
	The Company				Consolidated SCE&G		The Company				Consolidated SCE&G
Millions of dollars	Level 1		Level 2		Level 2		Level 1		Level 2		Level 2
Assets:
Available for sale securities	$	11					$	11
Held to maturity securities			$	7
Interest rate contracts									$	15	$	15
Commodity contracts	2						1
Energy management contracts			13						14
Liabilities:
Interest rate contracts			222		$	196			87		65
Commodity contracts			2				1		4
Energy management contracts	1		13				4		12

Fair Value, by Balance Sheet Grouping [Table Text Block]

Financial instruments for which the carrying amount may not equal estimated fair value were as follows:

Long-Term Debt	March 31, 2016				December 31, 2015
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
The Company	$	5,995.4	$	6,704.5	$	5,997.6	$	6,445.7
Consolidated SCE&G	$	4,766.9	$	5,368.3	$	4,769.0	$	5,129.1

SCEG [member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Fair value measurements, and the level within the fair value hierarchyin which the measurements fall, were as follows:

	As of March 31, 2016						As of December 31, 2015
	The Company				Consolidated SCE&G		The Company				Consolidated SCE&G
Millions of dollars	Level 1		Level 2		Level 2		Level 1		Level 2		Level 2
Assets:
Available for sale securities	$	11					$	11
Held to maturity securities			$	7
Interest rate contracts									$	15	$	15
Commodity contracts	2						1
Energy management contracts			13						14
Liabilities:
Interest rate contracts			222		$	196			87		65
Commodity contracts			2				1		4
Energy management contracts	1		13				4		12

Fair Value, by Balance Sheet Grouping [Table Text Block]

Financial instruments for which the carrying amount may not equal estimated fair value were as follows:

Long-Term Debt	March 31, 2016				December 31, 2015
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
The Company	$	5,995.4	$	6,704.5	$	5,997.6	$	6,445.7
Consolidated SCE&G	$	4,766.9	$	5,368.3	$	4,769.0	$	5,129.1