CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Operating Revenues:
Electric Regulated Revenue	$ 669.0	$ 786.0	$ 1,767.0	$ 2,042.0
Regulated Operating Revenue, Gas	122.0	123.0	631.0	584.0
Gas-nonregulated	135.0	167.0	550.0	623.0
Regulated and Unregulated Operating Revenue	926.0	1,076.0	2,948.0	3,249.0
Operating Expenses
Fuel used in electric generation	188.0	167.0	503.0	464.0
Purchased power	10.0	22.0	77.0	54.0
Utilities Operating Expense, Gas and Petroleum Purchased	177.0	211.0	774.0	808.0
Other operation and maintenance	201.0	181.0	610.0	535.0
Utilities Operating Expense, Impairments	0.0	210.0	4.0	210.0
Depreciation and amortization	100.0	96.0	299.0	285.0
Other taxes	67.0	67.0	206.0	200.0
Total Operating Expenses	743.0	954.0	2,473.0	2,556.0
Operating Income	183.0	122.0	475.0	693.0
Other Nonoperating Income (Expense)	3.0	19.0	136.0	45.0
Other Income (Expense):
Other income	8.0	28.0	144.0	61.0
Other expense	(14.0)	(9.0)	(34.0)	(33.0)
Interest Expense	(99.0)	(95.0)	(292.0)	(270.0)
Allowance for equity funds used during construction			12.0	17.0
Income Before Income Tax Expense	87.0	46.0	319.0	468.0
Income Tax Expense	20.0	12.0	75.0	142.0
Net Income (Loss) Available to Common Stockholders, Basic	$ 67.0	$ 34.0	$ 244.0	$ 326.0
Earnings Per Share, Basic and Diluted	$ 0.47	$ 0.24	$ 1.71	$ 2.28
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	$ 0.0	$ 0.0
Other Comprehensive Income (Loss), Net of Tax	$ 5.0	$ 3.0	$ 16.0	$ 0.0
Per Common Share Data
Weighted Average Number of Shares Outstanding, Basic and Diluted	143	143	143	143
Weighted Average Common Shares Outstanding (millions)
Common Stock, Dividends, Per Share, Declared	$ 0.1237	$ 0.6125	$ 0.8599	$ 1.838
SCEG
Operating Revenues:
Electric Regulated Revenue	$ 669.0	$ 786.0	$ 1,767.0	$ 2,042.0
Electric Domestic Regulated Revenues - Affiliate	1.0	1.0	3.0	4.0
Regulated Operating Revenue, Gas	69.0	69.0	303.0	284.0
Regulated Operating Revenue Gas, Affiliate		0.0	1.0	1.0
Regulated Operating Revenue	739.0	856.0	2,074.0	2,331.0
Operating Expenses
Fuel used in electric generation	153.0	132.0	408.0	370.0
Fuel used in electric generation, affiliate	35.0	35.0	95.0	94.0
Purchased power	10.0	22.0	77.0	54.0
Utilities Operating Expense, Gas and Petroleum Purchased	41.0	39.0	161.0	147.0
Other operation and maintenance	105.0	109.0	320.0	305.0
Other operation and maintenance, affiliate	39.0	44.0	135.0	135.0
Utilities Operating Expense, Impairments		210.0	4.0	210.0
Depreciation and amortization	81.0	78.0	242.0	232.0
Other taxes	61.0	62.0	188.0	183.0
Other taxes, affiliate	2.0	1.0	4.0	4.0
Total Operating Expenses	527.0	732.0	1,634.0	1,734.0
Operating Income	212.0	124.0	440.0	597.0
Other Nonoperating Income (Expense)	(1.0)	11.0	124.0	26.0
Other Income (Expense):
Other income	5.0	21.0	135.0	36.0
Other expense	(10.0)	(7.0)	(22.0)	(23.0)
Interest Expense	(79.0)	(76.0)	(232.0)	(214.0)
Allowance for equity funds used during construction			7.0	13.0
Income Before Income Tax Expense	132.0	59.0	332.0	409.0
Income Tax Expense	29.0	17.0	70.0	129.0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	103.0	42.0	262.0	280.0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	1.0		1.0
Other Comprehensive Income (Loss), Net of Tax	104.0	42.0	263.0	280.0
Net Income (Loss) Attributable to Noncontrolling Interest	6.0	3.0	15.0	10.0
Earnings Available to Common Shareholder	$ 98.0	$ 39.0	$ 248.0	$ 270.0
Weighted Average Common Shares Outstanding (millions)
Common Stock, Dividends, Per Share, Declared	$ 17,000,000	$ 81,000,000