CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Available to Common Shareholders	$ 420	$ 387	$ 376
Adjustments to reconcile net income to net cash provided from operating activities:
Deferred income taxes, net	130	164	240
Depreciation and amortization	368	354	341
Amortization of nuclear fuel	44	40	36
Allowance for equity funds used during construction	(21)	(14)	(20)
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions	0	2	3
Carrying cost recovery	0	0	(3)
Cash provided (used) by changes in certain assets and liabilities:
Receivables	5	34	(143)
Inventories	(53)	(44)	11
Prepayments and other	3	58	(109)
Regulatory liabilities	62	(17)	(13)
Accounts payable	34	(99)	79
Taxes accrued	10	8	12
Interest accrued	8	2	1
Regulatory assets	(172)	(173)	(71)
Changes in other assets	(120)	34	(32)
Changes in other liabilities	121	75	103
Net Cash Provided From Operating Activities	839	811	811
Net Cash Provided by (Used in) Investing Activities
Property additions and construction expenditures	(1,077)	(884)	(876)
Proceeds from investments (including derivative collateral posted)	472	36	104
Purchase of investments (including derivative collateral posted)	(414)	(168)	(102)
Payments for (Proceeds from) Hedge, Investing Activities	14	0	0
Payments for interest rate contract settlements	(51)	(61)	0
Net Cash Used in Investing Activities	(1,056)	(1,077)	(874)
Net Cash Provided by (Used in) Financing Activities
Proceeds from Issuance of Common Stock	97	97	149
Proceeds from issuance of long-term debt	759	826	259
Repayments of Long-term Debt	(309)	(668)	(300)
Dividends	(257)	(248)	(237)
Short-term borrowings, net	(30)	233	85
Net Cash Provided From Financing Activities	260	240	(44)
Net (Decrease) Increase in Cash and Cash Equivalents	43	(26)	(107)
Cash and Cash Equivalents, January 1	29	55	162
Cash and Cash Equivalents, December 31	72	29	55
Supplemental Cash Flow Information
Cash paid for-Interest (net of capitalized interest )	281	276	268
Cash paid for-Income taxes	107	6	61
Cash Flow, Noncash Investing and Financing Activities Disclosure
Accrued construction expenditures	124	85	179
Capital Lease Obligations Incurred	8	6	6
SCE&G
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	352	316	304
Adjustments to reconcile net income to net cash provided from operating activities:
Losses from equity method investments	4	2	2
Deferred income taxes, net	116	138	234
Depreciation and amortization	294	288	276
Amortization of nuclear fuel	44	40	36
Allowance for equity funds used during construction	(21)	(13)	(19)
Carrying cost recovery	0	0	(3)
Cash provided (used) by changes in certain assets and liabilities:
Receivables	35	(31)	(110)
Inventories	(60)	(25)	(5)
Prepayments and other	(64)	82	(87)
Regulatory liabilities	64	(12)	(11)
Accounts payable	27	(48)	59
Taxes accrued	1	13	9
Interest accrued	9	4	(1)
Regulatory assets	(158)	(165)	(55)
Changes in other assets	(84)	27	(78)
Changes in other liabilities	115	39	120
Net Cash Provided From Operating Activities	674	655	671
Net Cash Provided by (Used in) Investing Activities
Property additions and construction expenditures	(978)	(786)	(771)
Proceeds from investments (including derivative collateral posted)	275	11	49
Purchase of investments (including derivative collateral posted)	(268)	(57)	(43)
Payments for (Proceeds from) Hedge, Investing Activities	14	0	0
Payments for interest rate contract settlements	0	(31)	0
Net Cash Used in Investing Activities	(957)	(863)	(724)
Net Cash Provided by (Used in) Financing Activities
Proceeds from issuance of long-term debt	513	379	90
Repayments of Long-term Debt	(49)	(206)	(219)
Dividends	(202)	(205)	(195)
Contributions from parent	128	107	146
Short-term borrowings, net	(63)	131	127
Investment In Affiliate	0	0	41
Short-term borrowings- affiliate,net	(9)	(13)	1
Net Cash Provided From Financing Activities	318	193	(50)
Net (Decrease) Increase in Cash and Cash Equivalents	35	(15)	(103)
Cash and Cash Equivalents, January 1	16	31	134
Cash and Cash Equivalents, December 31	51	16	31
Supplemental Cash Flow Information
Cash paid for-Interest (net of capitalized interest )	186	181	175
Cash paid for-Income taxes	105	0	31
Cash Flow, Noncash Investing and Financing Activities Disclosure
Accrued construction expenditures	116	75	168
Capital Lease Obligations Incurred	$ 8	$ 6	$ 0