FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Fair Value, Measurement Inputs, Disclosure [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, 2014				As of December 31, 2013
Millions of dollars	Level 1		Level 2		Level 1		Level 2
Assets:
Available for sale securities	$	11	—		$	9	—
Interest rate contracts	—		$	2	—		$	32
Commodity contracts	3		2		2		2
Energy management contracts	1		6		1		7
Liabilities:
Interest rate contracts	—		106		—		20
Commodity contracts	—		—		—		—
Energy management contracts	—		10		—		12

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

Financial instruments for which the carrying amount may not equal estimated fair value at March 31, 2014 and December 31, 2013 were as follows:

	March 31, 2014				December 31, 2013
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt	$	5,441.5	$	6,096.8	$	5,449.3	$	5,916.3

SCEG

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Fair Value, Measurement Inputs, Disclosure [Table Text Block]

Fair value Level 2 measurements were as follows: 

Millions of dollars		March 31, 2014		December 31, 2013
Assets -	Interest rate contracts	$	2	$	32
Liabilities -	Interest rate contracts	86		2

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

Financial instruments for which the carrying amount may not equal estimated fair value at March 31, 2014 and December 31, 2013 were as follows:

	March 31, 2014				December 31, 2013
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt	$	4,047.6	$	4,574.2	$	4,054.9	$	4,433.0