INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2016

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

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

:

	The Company									Consolidated SCE&G
Millions of dollars	2016			2015			2014			2016			2015			2014
Current taxes:
Federal	$	36		$	382		$	38		$	50		$	208		$	39
State	13			57			(4		)	13			32			(6		)
Total current taxes	49			439			34			63			240			33
Deferred tax (benefit) expense, net:
Federal	203			(36		)	184			167			(3		)	157
State	21			(7		)	34			20			(3		)	32
Total deferred taxes	224			(43		)	218			187			(6		)	189
Investment tax credits:
Amortization of amounts deferred-state	—			(1		)	(1		)	—			(1		)	(1		)
Amortization of amounts deferred-federal	(2		)	(2		)	(3		)	(2		)	(2		)	(3		)
Total investment tax credits	(2		)	(3		)	(4		)	(2		)	(3		)	(4		)
Total income tax expense	$	271		$	393		$	248		$	248		$	231		$	218

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

:

	The Company									Consolidated SCE&G
Millions of dollars	2016			2015			2014			2016			2015			2014
Net income	$	595		$	746		$	538		$	513		$	466		$	446
Income tax expense	271			393			248			248			231			218
Noncontrolling interest	—			—			—			13			14			12
Total pre-tax income	$	866		$	1,139		$	786		$	774		$	711		$	676
Income taxes on above at statutory federal income tax rate	$	303		$	399		$	275		$	271		$	249		$	237
Increases (decreases) attributed to:
State income taxes (less federal income tax effect)	27			38			24			26			24			21
State investment tax credits (less federal income tax effect)	(5		)	(6		)	(5		)	(5		)	(6		)	(5		)
Allowance for equity funds used during construction	(10		)	(9		)	(11		)	(9		)	(9		)	(10		)
Deductible dividends—401(k) Retirement Savings Plan	(10		)	(10		)	(10		)	—			—			—
Amortization of federal investment tax credits	(2		)	(2		)	(3		)	(2		)	(2		)	(3		)
Section 41 tax credits	—			1			(3		)	—			1			(3		)
Section 45 tax credits	(8		)	(9		)	(9		)	(8		)	(9		)	(9		)
Domestic production activities deduction	(23		)	(18		)	(7		)	(23		)	(18		)	(7		)
Realization of basis differences upon sale of subsidiaries	—			7			—			—			—			—
Other differences, net	(1		)	2			(3		)	(2		)	1			(3		)
Total income tax expense	$	271		$	393		$	248		$	248		$	231		$	218

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

:

	The Company				Consolidated SCE&G
Millions of dollars	2016		2015		2016		2015
Deferred tax assets:
Nondeductible accruals	$	148	$	135	$	53	$	52
Asset retirement obligation, including nuclear decommissioning	213		199		200		187
Financial instruments	22		35		—		2
Unamortized investment tax credits	15		16		15		16
Deferred fuel costs	17		8		17		7
Other	10		5		8		2
Total deferred tax assets	425		398		293		266
Deferred tax liabilities:
Property, plant and equipment	2,159		1,906		1,856		1,644
Deferred employee benefit plan costs	105		96		93		85
Regulatory asset, asset retirement obligation	143		135		135		127
Regulatory asset, unrecovered plant	45		49		45		49
Demand side management costs	23		23		23		23
Prepayments	32		31		30		29
Other	77		65		50		41
Total deferred tax liabilities	2,584		2,305		2,232		1,998
Net deferred tax liability	$	2,159	$	1,907	$	1,939	$	1,732

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

	The Company							Consolidated SCE&G
Millions of dollars	2016		2015			2014		2016		2015			2014
Unrecognized tax benefits, January 1	$	49	$	16		$	3	$	49	$	16		$	3
Gross increases—uncertain tax positions in prior period	94		33			—		94		33			—
Gross decreases—uncertain tax positions in prior period	—		(2		)	—		—		(2		)	—
Gross increases—current period uncertain tax positions	207		2			13		207		2			13
Unrecognized tax benefits, December 31	$	350	$	49		$	16	$	350	$	49		$	16

SCE&G

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

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

:

	The Company									Consolidated SCE&G
Millions of dollars	2016			2015			2014			2016			2015			2014
Current taxes:
Federal	$	36		$	382		$	38		$	50		$	208		$	39
State	13			57			(4		)	13			32			(6		)
Total current taxes	49			439			34			63			240			33
Deferred tax (benefit) expense, net:
Federal	203			(36		)	184			167			(3		)	157
State	21			(7		)	34			20			(3		)	32
Total deferred taxes	224			(43		)	218			187			(6		)	189
Investment tax credits:
Amortization of amounts deferred-state	—			(1		)	(1		)	—			(1		)	(1		)
Amortization of amounts deferred-federal	(2		)	(2		)	(3		)	(2		)	(2		)	(3		)
Total investment tax credits	(2		)	(3		)	(4		)	(2		)	(3		)	(4		)
Total income tax expense	$	271		$	393		$	248		$	248		$	231		$	218

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

	The Company									Consolidated SCE&G
Millions of dollars	2016			2015			2014			2016			2015			2014
Net income	$	595		$	746		$	538		$	513		$	466		$	446
Income tax expense	271			393			248			248			231			218
Noncontrolling interest	—			—			—			13			14			12
Total pre-tax income	$	866		$	1,139		$	786		$	774		$	711		$	676
Income taxes on above at statutory federal income tax rate	$	303		$	399		$	275		$	271		$	249		$	237
Increases (decreases) attributed to:
State income taxes (less federal income tax effect)	27			38			24			26			24			21
State investment tax credits (less federal income tax effect)	(5		)	(6		)	(5		)	(5		)	(6		)	(5		)
Allowance for equity funds used during construction	(10		)	(9		)	(11		)	(9		)	(9		)	(10		)
Deductible dividends—401(k) Retirement Savings Plan	(10		)	(10		)	(10		)	—			—			—
Amortization of federal investment tax credits	(2		)	(2		)	(3		)	(2		)	(2		)	(3		)
Section 41 tax credits	—			1			(3		)	—			1			(3		)
Section 45 tax credits	(8		)	(9		)	(9		)	(8		)	(9		)	(9		)
Domestic production activities deduction	(23		)	(18		)	(7		)	(23		)	(18		)	(7		)
Realization of basis differences upon sale of subsidiaries	—			7			—			—			—			—
Other differences, net	(1		)	2			(3		)	(2		)	1			(3		)
Total income tax expense	$	271		$	393		$	248		$	248		$	231		$	218

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

	The Company				Consolidated SCE&G
Millions of dollars	2016		2015		2016		2015
Deferred tax assets:
Nondeductible accruals	$	148	$	135	$	53	$	52
Asset retirement obligation, including nuclear decommissioning	213		199		200		187
Financial instruments	22		35		—		2
Unamortized investment tax credits	15		16		15		16
Deferred fuel costs	17		8		17		7
Other	10		5		8		2
Total deferred tax assets	425		398		293		266
Deferred tax liabilities:
Property, plant and equipment	2,159		1,906		1,856		1,644
Deferred employee benefit plan costs	105		96		93		85
Regulatory asset, asset retirement obligation	143		135		135		127
Regulatory asset, unrecovered plant	45		49		45		49
Demand side management costs	23		23		23		23
Prepayments	32		31		30		29
Other	77		65		50		41
Total deferred tax liabilities	2,584		2,305		2,232		1,998
Net deferred tax liability	$	2,159	$	1,907	$	1,939	$	1,732

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

	The Company							Consolidated SCE&G
Millions of dollars	2016		2015			2014		2016		2015			2014
Unrecognized tax benefits, January 1	$	49	$	16		$	3	$	49	$	16		$	3
Gross increases—uncertain tax positions in prior period	94		33			—		94		33			—
Gross decreases—uncertain tax positions in prior period	—		(2		)	—		—		(2		)	—
Gross increases—current period uncertain tax positions	207		2			13		207		2			13
Unrecognized tax benefits, December 31	$	350	$	49		$	16	$	350	$	49		$	16