CONSOLIDATED STATEMENTS OF COMMON EQUITY Statement - USD ($) shares in Millions, $ in Millions	Total	AOCI Attributable to Parent [Member]	Reclassification out of Accumulated Other Comprehensive Income [Member]	SCEG	SCEG excluding VIEs [Member]	SCEG and GENCO [Member]
Stockholders' Equity before Treasury Stock	$ 2,388
Treasury Stock, Value	(10)
Retained Earnings, Appropriated	2,684				$ 2,077
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(63)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(12)
Accumulated Other Comprehensive Income (Loss)	(75)				$ (3)
Stockholders' Equity Attributable to Noncontrolling Interest						$ 123
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				$ 4,757
Stockholders' Equity Attributable to Parent	$ 4,987
Shares, Outstanding	143				40
Common Stock, Value, Outstanding					$ 2,560
Stock Issued During Period, Value, Other	$ 13
Stock Issued During Period, Value, Treasury Stock Reissued	$ (1)
Common Stock, Dividends, Per Share, Declared	$ 1.090
Net Income (Loss) Available to Common Stockholders, Basic	$ 499				230
Net Income (Loss) Attributable to Noncontrolling Interest				7		7
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest				237
Proceeds from Contribution from Parent, net of return of Proceeds					196
Dividends				140	137
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders						3
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(1)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Remeasurement and Curtailment Adjustement, Net of Tax	(4)
Other comprehensive income (loss), unrealized holding gain (loss) net of reclassification to AOCI arising during period, net of tax	12
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	13
Other Comprehensive Income (Loss)	8
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 507				230
Stock Issued During Period, Shares, New Issues	0
Proceeds from Issuance of Common Stock	$ 14
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	0
Dividends, Common Stock	(156)			(140)
Stockholders' Equity before Treasury Stock	2,402
Treasury Stock, Value	(11)
Retained Earnings, Appropriated	3,027				2,170
AOCI before Tax, Attributable to Parent		$ (5)	$ (13)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(51)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(16)
Accumulated Other Comprehensive Income (Loss)	(67)				$ (3)
Stockholders' Equity Attributable to Noncontrolling Interest						127
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				5,050
Stockholders' Equity Attributable to Parent	$ 5,351
Shares, Outstanding	143				40
Common Stock, Value, Outstanding					$ 2,756
Stockholders' Equity before Treasury Stock	$ 2,402
Treasury Stock, Value	(12)
Retained Earnings, Appropriated	3,118			2,265	2,265
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(53)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(12)
Accumulated Other Comprehensive Income (Loss)	(65)				$ (3)
Stockholders' Equity Attributable to Noncontrolling Interest				129		129
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				5,151
Stockholders' Equity Attributable to Parent	$ 5,443			5,022
Shares, Outstanding	143				40
Common Stock, Value, Outstanding	$ 2,390			2,760	$ 2,760
Common Stock, Dividends, Per Share, Declared	$ 1.150
Net Income (Loss) Available to Common Stockholders, Basic	$ 281				223
Net Income (Loss) Attributable to Noncontrolling Interest				6		6
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest				229
Proceeds from Contribution from Parent, net of return of Proceeds					100
Dividends				149	145
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders						4
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(3)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Remeasurement and Curtailment Adjustement, Net of Tax	0
Other comprehensive income (loss), unrealized holding gain (loss) net of reclassification to AOCI arising during period, net of tax	7
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	10
Other Comprehensive Income (Loss)	7
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	288				223
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	0
Dividends, Common Stock	(164)			(149)
Stockholders' Equity before Treasury Stock	2,402
Treasury Stock, Value	(12)
Retained Earnings, Appropriated	3,235			2,343	2,343
AOCI before Tax, Attributable to Parent		$ (3)	$ (10)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(46)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(12)
Accumulated Other Comprehensive Income (Loss)	(58)				$ (3)
Stockholders' Equity Attributable to Noncontrolling Interest				131		$ 131
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest				5,331
Stockholders' Equity Attributable to Parent	$ 5,567			5,200
Shares, Outstanding	143				40
Common Stock, Value, Outstanding	$ 2,390			$ 2,860	$ 2,860