CONSOLIDATED STATEMENTS OF COMMON EQUITY Statement - USD ($) shares in Millions, $ in Millions	Total	AOCI Attributable to Parent [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	$ 1.635
Net Income (Loss) Available to Common Stockholders, Basic	$ 648			394
Net Income (Loss) Attributable to Noncontrolling Interest			11		11
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			405
Proceeds from Contribution from Parent, net of return of Proceeds				196
Dividends			210	205
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					5
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(8)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Remeasurement and Curtailment Adjustement, Net of Tax	(3)
Other comprehensive income (loss), unrealized holding gain (loss) net of reclassification to AOCI arising during period, net of tax	8
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	16
Other Comprehensive Income (Loss)	5
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 653			394
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	(234)		(211)
Treasury Stock, Value	(11)
Retained Earnings, Appropriated	3,098			2,266
AOCI before Tax, Attributable to Parent	(16)	$ (11)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(55)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(15)
Accumulated Other Comprehensive Income (Loss)	(70)			$ (3)
Stockholders' Equity Attributable to Noncontrolling Interest					129
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			5,148
Stockholders' Equity Attributable to Parent	5,419
Shares, Outstanding				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	$ 1.725
Net Income (Loss) Available to Common Stockholders, Basic	$ 471			423
Net Income (Loss) Attributable to Noncontrolling Interest			10		10
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			433
Proceeds from Contribution from Parent, net of return of Proceeds				100
Dividends			225	219
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					6
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(4)
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	8
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	12
Other Comprehensive Income (Loss)	8
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	479			423
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	0
Dividends, Common Stock	(247)		(225)
Stockholders' Equity before Treasury Stock	2,402
Treasury Stock, Value	(12)
Retained Earnings, Appropriated	3,342		2,469	2,469
AOCI before Tax, Attributable to Parent	(12)	$ (4)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(45)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(12)
Accumulated Other Comprehensive Income (Loss)	(57)			$ (3)
Stockholders' Equity Attributable to Noncontrolling Interest			133		$ 133
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest			5,459
Stockholders' Equity Attributable to Parent	$ 5,675		5,326
Shares, Outstanding	143			40
Common Stock, Value, Outstanding	$ 2,390		$ 2,860	$ 2,860