CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating Revenues:
Electric Domestic Regulated Revenue	$ 629	$ 678
Regulated Operating Revenue, Gas	369	458
Gas-nonregulated	391	454
Regulated and Unregulated Operating Revenue	1,389	1,590
Operating Expenses [Abstract]
Fuel used in electric generation	174	212
Purchased power	13	25
Gas purchased for resale	523	670
Other operation and maintenance	173	180
Depreciation and amortization	96	95
Other taxes	59	58
Total Operating Expenses	1,038	1,240
Gain (Loss) on Disposition of Business	235	0
Operating Income	586	350
Other Income (Expense):
Other income	19	15
Other expenses	(12)	(14)
Gain (Loss) On Disposition Of Unregulated Business Net Of Transaction Costs	107	0
Interest Expense	(77)	(76)
Allowance for equity funds used during construction	5	7
Total Other Expense	42	(68)
Income Before Income Tax Expense	628	282
Income Tax Expense	228	89
Net Income	400	193
Per Common Share Data
Basic Earnings Per Share of Common Stock (in dollars per share)	$ 2.8	$ 1.37
Weighted Average Number of Shares Outstanding, Basic and Diluted	142.9	141.1
Common Stock, Dividends, Per Share, Declared	$ 0.5450	$ 0.5250
SCEG
Operating Revenues:
Electric Domestic Regulated Revenue	630	680
Regulated Operating Revenue, Gas	142	179
Regulated Operating Revenue	772	859
Operating Expenses [Abstract]
Fuel used in electric generation	174	214
Purchased power	13	25
Gas purchased for resale	74	109
Other operation and maintenance	139	142
Depreciation and amortization	80	78
Other taxes	55	52
Total Operating Expenses	535	620
Operating Income	237	239
Other Income (Expense):
Other income	9	3
Other expenses	(8)	(6)
Interest Expense	(59)	(56)
Allowance for equity funds used during construction	5	5
Total Other Expense	(53)	(54)
Income Before Income Tax Expense	184	185
Income Tax Expense	58	59
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	126	126
Net Income (Loss) Attributable to Noncontrolling Interest	(4)	(3)
Earnings Available to Common Shareholder	122	123
Per Common Share Data
Dividends, Common Stock, Cash	$ 71	$ 64