INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2015

Investments, Owned, Federal Income Tax Note [Line Items]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

:

Millions of dollars	2015			2014			2013
Current taxes:
Federal	$	382		$	38		$	161
State	57			(4		)	17
Total current taxes	439			34			178
Deferred tax (benefit) expense, net:
Federal	(36		)	184			39
State	(7		)	34			10
Total deferred taxes	(43		)	218			49
Investment tax credits:
Amortization of amounts deferred-state	(1		)	(1		)	(1		)
Amortization of amounts deferred-federal	(2		)	(3		)	(3		)
Total investment tax credits	(3		)	(4		)	(4		)
Total income tax expense	$	393		$	248		$	223

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

:

Millions of dollars	2015			2014			2013
Net income	$	746		$	538		$	471
Income tax expense	393			248			223
Total pre-tax income	$	1,139		$	786		$	694
Income taxes on above at statutory federal income tax rate	$	399		$	275		$	243
Increases (decreases) attributed to:
State income taxes (less federal income tax effect)	38			24			22
State investment tax credits (less federal income tax effect)	(6		)	(5		)	(5		)
Allowance for equity funds used during construction	(9		)	(11		)	(9		)
Deductible dividends—401(k) Retirement Savings Plan	(10		)	(10		)	(10		)
Amortization of federal investment tax credits	(2		)	(3		)	(3		)
Section 41 tax credits	1			(3		)	—
Section 45 tax credits	(9		)	(9		)	(5		)
Domestic production activities deduction	(18		)	(7		)	(11		)
Realization of basis differences upon sale of subsidiaries	7			—			—
Other differences, net	2			(3		)	1
Total income tax expense	$	393		$	248		$	223

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

:

Millions of dollars	2015		2014
Deferred tax assets:
Nondeductible accruals	$	135	$	127
Asset retirement obligation, including nuclear decommissioning	199		216
Financial instruments	35		40
Unamortized investment tax credits	16		17
Deferred fuel costs	8		—
Monetization of bankruptcy claim	—		10
Other	5		10
Total deferred tax assets	398		420
Deferred tax liabilities:
Property, plant and equipment	$	1,906	$	1,928
Deferred employee benefit plan costs	96		107
Regulatory asset, asset retirement obligation	135		122
Deferred fuel costs	—		27
Regulatory asset, unrecovered plant	49		53
Regulatory asset, net loss on interest rate derivative contracts settlement	—		21
Demand side management costs	23		21
Prepayments	31		27
Other	65		45
Total deferred tax liabilities	2,305		2,351
Net deferred tax liability	$	1,907	$	1,931

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

Millions of dollars	2015			2014		2013
Unrecognized tax benefits, January 1	$	16		$	3	—
Gross increases—uncertain tax positions in prior period	33			—		—
Gross decreases—uncertain tax positions in prior period	(2		)	—		—
Gross increases—current period uncertain tax positions	2			13		$	3
Unrecognized tax benefits, December 31	$	49		$	16	$	3

SCE&G

Investments, Owned, Federal Income Tax Note [Line Items]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Millions of dollars	2015			2014			2013
Current taxes:
Federal	$	208		$	39		$	146
State	32			(6		)	13
Total current taxes	240			33			159
Deferred tax (benefit) expense, net:
Federal	(3		)	157			25
State	(3		)	32			9
Total deferred taxes	(6		)	189			34
Investment tax credits:
Amortization of amounts deferred—state	(1		)	(1		)	(1		)
Amortization of amounts deferred—federal	(2		)	(3		)	(3		)
Total investment tax credits	(3		)	(4		)	(4		)
Total income tax expense	$	231		$	218		$	189

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Millions of dollars	2015			2014			2013
Net income	$	466		$	446		$	380
Income tax expense	231			218			189
Noncontrolling interest	14			12			11
Total pre-tax income	$	711		$	676		$	580
Income taxes on above at statutory federal income tax rate	$	249		$	237		$	203
Increases (decreases) attributed to:
State income taxes (less federal income tax effect)	24			21			18
State investment tax credits (less federal income tax effect)	(6		)	(5		)	(5		)
Allowance for equity funds used during construction	(9		)	(10		)	(9		)
Amortization of federal investment tax credits	(2		)	(3		)	(3		)
Section 41 tax credits	1			(3		)	—
Section 45 tax credits	(9		)	(9		)	(5		)
Domestic production activities deduction	(18		)	(7		)	(11		)
Other differences, net	1			(3		)	1
Total income tax expense	$	231		$	218		$	189

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Millions of dollars	2015		2014
Deferred tax assets:
Nondeductible accruals	$	52	$	47
Asset retirement obligation, including nuclear decommissioning	187		205
Unamortized investment tax credits	16		17
Deferred fuel costs	7		—
Financial instruments	2		—
Other	2		6
Total deferred tax assets	266		275
Deferred tax liabilities:
Property, plant and equipment	$	1,644	$	1,623
Regulatory asset, asset retirement obligation	127		115
Deferred employee benefit plan costs	85		91
Deferred fuel costs	—		27
Regulatory asset, unrecovered plant	49		53
Regulatory asset, net loss on interest rate derivative contracts settlement	—		21
Demand side management costs	23		21
Prepayments	29		25
Other	41		23
Total deferred tax liabilities	1,998		1,999
Net deferred tax liability	$	1,732	$	1,724

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

Millions of dollars	2015			2014		2013
Unrecognized tax benefits, January 1	$	16		$	3	—
Gross increases-uncertain tax positions in prior period	33			—		—
Gross decreases-uncertain tax positions in prior period	(2		)	—		—
Gross increases-current period uncertain tax positions	2			13		$	3
Unrecognized tax benefits, December 31	$	49		$	16	$	3