FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Tables)

12 Months Ended

Dec. 31, 2013

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

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

	As of December 31, 2013				As of December 31, 2012
Millions of dollars	Level 1		Level 2		Level 1		Level 2
Assets:
Available for sale securities	$	9	—		$	6	—
Interest rate contracts	—		$	32	—		$	73
Commodity contracts	2		2		1		1
Energy management contracts	1		7		—		13
Liabilities:
Interest rate contracts	—		20		—		106
Commodity contracts	—		—		—		4
Energy management contracts	—		12		1		15

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

	As of December 31, 2013				As of December 31, 2012
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt	$	5,449.3	$	5,916.3	$	5,121.0	$	6,115.0

SCE&G

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

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

	As of December 31, 2013		As of December 31, 2012
Millions of dollars	Level 2		Level 2
Assets-Interest rate contracts	$	32	$	73
Liabilities-Interest rate contracts	2		75

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

	As of December 31, 2013				As of December 31, 2012
Millions of dollars	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt	$	4,054.9	$	4,433.0	$	3,722.0	$	4,543.1