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Percentage of stock sold in transaction

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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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Gain (loss) on entity's disposition of equity in securities of subsidiaries or 50 percent or less owned persons. Reflects the difference in the parent company's carrying amount of the equity interest in the subsidiary (or equity method investee) immediately before and after all stock transactions.

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Carrying amount as of the balance sheet date of expenditures made, not otherwise specified in the taxonomy, in advance of the timing of recognition of expenses which are expected to be charged against earnings within one year or the normal operating cycle, if longer.

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Cash received on stock transaction after deduction of issuance costs.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

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Noncontrolling Interest (Details) (USD $)	3 Months Ended	7 Months Ended	9 Months Ended				1 Months Ended	9 Months Ended
Noncontrolling Interest (Details) (USD $)	Sep. 30, 2011	Aug. 10, 2010	Sep. 30, 2011	Dec. 31, 2010	Jul. 31, 2011 KGL [Member]	Jul. 31, 2011 GOM [Member]	Jul. 31, 2011 KGL And GOM [Member]	Sep. 30, 2011 KGL And GOM [Member]	Sep. 30, 2011 Puncak Oil and Gas Sdn. Bhd. [Member]
Sale of ordinary shares, shares		60,000
Sale of ordinary shares percentage of total		30.00%
Share of ownership percentage		30.00%			30.00%	40.00%
Number of ordinary shares purchased					60,000	300,000
Consideration received on transaction							$ 23,600,000
Sale of ordinary shares percentage							40.00%
Remaining ownership percentage							60.00%
Additional consideration for remaining ownership							35,400,000
Gain on the transaction	47,848,000		47,848,000					47,800,000
Prepaid expenses and other	$ 41,730,000		$ 41,730,000	$ 34,099,000					$ 18,200,000