CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 76.4		$ 76.4		$ 85.6
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	0	(2,000,000)	2,000,000	(4,000,000)
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	0	2,000,000	3,000,000	9,000,000
SCEG
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 3,900,000		$ 3,900,000		$ 4,000,000