Commitments and Contingencies (Details 3) (Formosa Hydrocarbons Company, Inc. [Member], USD $)	Jun. 30, 2011
Formosa Hydrocarbons Company, Inc. [Member]
Significant Purchase and Supply Commitment, Excluding Long-term Commitment [Line Items]
Payment obligation for commitment under fractionation and product sales agreement for 2011	$ 0
Payment obligation for commitment under fractionation and product sales agreement for 2012	0
Payment obligation for commitment under fractionation and product sales agreement for 2013	8,085,000
Payment obligation for commitment under fractionation and product sales agreement for 2014	10,731,000
Payment obligation for commitment under fractionation and product sales agreement for 2015	10,731,000
Payment obligation for commitment under fractionation and product sales agreement for thereafter	$ 77,822,000

Payment obligation for commitment under fractionation and product sales agreement after year five.

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Payment obligation for commitment under fractionation and product sales agreement for year five.

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Payment obligation for commitment under fractionation and product sales agreement for year four.

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Payment obligation for commitment under fractionation and product sales agreement for year one.

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Payment obligation for commitment under fractionation and product sales agreement for year three.

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Payment obligation for commitment under fractionation and product sales agreement for year two.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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