FAIR VALUE MEASUREMENTS, INCLUDING DERIVATIVES (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurements	no	no
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	$ 44	$ 87
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	28	122
Transfers of fair value amounts into or out of Levels 1, 2 or 3	no	no
Interest Rate Contract
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	32	73
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	20	106
Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	4	2
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities		4
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets, Fair Value Disclosure [Abstract]
Available-for-sale Securities	9	6
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest Rate Contract
Assets, Fair Value Disclosure [Abstract]
Derivative Assets		0
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	2	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other energy management contracts
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	0	1
Fair Value, Inputs, Level 2 [Member] | Interest Rate Contract
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	32	73
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	20	106
Fair Value, Inputs, Level 2 [Member] | Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	2	1
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	0	4
Fair Value, Inputs, Level 2 [Member] | Other energy management contracts
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	7	13
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	12	15
SCE&G
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 3 Fair Value Measurements	no	no
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	32	73
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	2	75
Transfers of fair value amounts into or out of Levels 1, 2 or 3	no	no
SCE&G | Interest Rate Contract
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	32	73
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	2	75
SCE&G | Fair Value, Inputs, Level 2 [Member] | Interest Rate Contract
Assets, Fair Value Disclosure [Abstract]
Derivative Assets	32	73
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liabilities	$ 2	$ 75