CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME PARENTHETICAL STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 78.8		$ 85.6
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	2,000,000	(2,000,000)
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	2,000,000	6,000,000
SCEG
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 3,900,000		$ 4,000,000