CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest Rate Cash Flow Hedge Ineffectiveness is Immaterial	insignificant	insignificant	insignificant	insignificant
Net Income (Loss) Attributable to Parent [Abstract]
Net Income	$ 144	$ 131	$ 433	$ 368
Other Comprehensive Income (Loss)
Unrealized gains (losses) on cash flow hedging activities arising during period	(2)	(1)	(3)	3
(Gains) Losses on cash flow hedging activities reclassified to net income	2	2	1	7
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Remeasurement and Curtailment Adjustement, Net of Tax		4		4
Other Comprehensive Income (Loss)	1	6	(1)	15
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax	1	1	1	1
SCEG
Reclassifcations of deferred employee benefit costs			not significant
Interest Rate Cash Flow Hedge Ineffectiveness is Immaterial	insignificant	insignificant	insignificant	insignificant
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	157	139	383	319
Other Comprehensive Income (Loss)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax		1		1
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	157	140	383	320
Genco
Other Comprehensive Income (Loss)
Less comprehensive income attributable to noncontrolling interest	3	3	9	8
SCE&G (including Fuel Company)
Net Income (Loss) Attributable to Parent [Abstract]
Net Income			$ 374	$ 311