AFFILIATED TRANSACTIONS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
AFFILIATED TRANSACTIONS
Cash distributions from equity-method investees	$ 5.5	$ 4.8	$ 3.3
Investments made in equity-method investees	13.6	5.1	1.6
SCE&G
Equity method investments
Receivables from affiliates	8.5
Payables to affiliates	8.6
Total purchases	123.8	97.3
Total sales	$ 123.3	$ 96.9
Canadys Refined Coal, LLC \| SCE&G
Equity method investments
Percentage of ownership interest (as a percent)	40.00%
Cope Refined Coal, LLC \| SCE&G
Equity method investments
Percentage of ownership interest (as a percent)	10.00%

For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

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+ Details

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References+ Details