Amount paid to the counterparty.

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Carrying amount of notes receivable and advances to affiliates.

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Financial Instruments.

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Tax increment financing bonds.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

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-Paragraph 2

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

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Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective.

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Financial Instruments (Details Textuals) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2011 Interest Rate Swaps Three [Member]	Jun. 30, 2011 Interest Rate Swaps Three [Member]	Sep. 30, 2011 Interest Rate Swaps Two [Member]	Mar. 31, 2011 Interest Rate Swaps Two [Member]	Mar. 31, 2011 Interest Rate Swaps Terminated [Member]	Feb. 28, 2011 Treasury Locks [Member]
Financial Instruments (Textuals) [Abstract]
Aggregate Notional Amount				$ 100.0	$ 100.0	$ 84.4	$ 85.0	$ 50.0	$ 200.0
Senior note principal amount		300
Aggregate payment of treasury locks		2.2
Unrealized Loss of hedging instrument	4.6
Approximate Fair value of notes	109.0		120.8
Carrying amount of notes	109.6		122.6
Tax Increment Financing Bonds	6.3		13.8
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net	$ 4.4