FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Tables)

6 Months Ended

Jun. 30, 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 June 30, 2014				As of December 31, 2013
Millions of dollars	Level 1		Level 2		Level 1		Level 2
Assets:
Available for sale securities	$	12	—		$	9	—
Interest rate contracts	—		$	2	—		$	32
Commodity contracts	2		1		2		2
Energy management contracts	1		5		1		7
Liabilities:
Interest rate contracts	—		146		—		20
Commodity contracts	—		1		—		—
Energy management contracts	—		9		—		12

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

Financial instruments for which the carrying amount may not equal estimated fair value at June 30, 2014 and December 31, 2013 were as follows:

	June 30, 2014				December 31, 2013
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt	$	5,732.4	$	6,513.0	$	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		June 30, 2014		December 31, 2013
Assets -	Interest rate contracts	$	2	$	32
Liabilities -	Interest rate contracts	125		2

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

Financial instruments for which the carrying amount may not equal estimated fair value at June 30, 2014 and December 31, 2013 were as follows:

	June 30, 2014				December 31, 2013
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt	$	4,343.1	$	4,975.1	$	4,054.9	$	4,433.0