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Estimated cost incurred including capitalized equity and debt costs to place a project in service

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Amount of interest awarded to the Company in a settlement

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Loans to unconsolidated investments net of repayments

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

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Cash received for the settlement of litigation during the current period.

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Unconsolidated Investments 3 Narrative (Details) (USD $)	9 Months Ended		3 Months Ended		9 Months Ended		0 Months Ended	1 Months Ended
	Sep. 30, 2011	Apr. 30, 2011	Sep. 30, 2011 Citrus [Member]	Sep. 30, 2010 Citrus [Member]	Sep. 30, 2011 Citrus [Member]	Sep. 30, 2010 Citrus [Member]	May 02, 2011 Florida Gas [Member]	Jan. 27, 2011 Florida Gas [Member]
Notes to Financial Statements [Abstract]
Equity Method Investment, Ownership Percentage	50.00%
Equity Method Investment, Dividends or Distributions			$ 0	$ 0	$ 0	$ 0
Estimated Cost		2,500,000,000
Years Firm Transportation Service Agreements	25
Contracted Capacity	74
Net Loan To Unconsolidated Investment	37,000,000
Promissory Note with Unconsolidated Investment	150,000,000
Promissory Note Interest Rate	one-month Eurodollar rate plus a credit spread of 1.5 percent
Proceeds From Legal Settlements								82,700,000
Interest Awarded							$ 8,000,000