Business acquisition cost of acquired entity fund In escrow account.

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Contractual arrangements fixed sum.

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Conveyance of undivided interest in assets and related well plugging and abandonment obligations.

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Long Term Contracts.

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Net escrowed cash.

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Performance Bond required to be obtained by acquiree.

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- Definition

Percentage of voting equity interests acquired in the business combination.

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Amount included in cost of uncompleted contracts in excess of related billings, or unbilled accounts receivable, which is expected to be collected within a year within one year (or one operating cycle, if longer) from the date of the balance sheet.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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- Definition

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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-Name Statement of Financial Accounting Standard (FAS)
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Long-Term Contracts (Details) (USD $) In Millions, unless otherwise specified						1 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jan. 26, 2010	Jan. 26, 2010 Shell Offshore Inc. Gulf of Maxico Bullwinkle Platform [Member]	Mar. 31, 2011 Dynamic Offshore [Member]	Dec. 31, 2007 Wildwell [Member]	Jun. 30, 2011 Wildwell [Member]	Dec. 31, 2010 Wildwell [Member]
Long-Term Contracts (Textuals) [Abstract]
Percentage of ownership acquired by Wild Well in Shell Offshore Inc.'s Gulf of Mexico Bullwinkle platform				100.00%
Conveyance of undivided interest in assets and related well plugging and abandonment obligations			49.00%
Performance bonds required to be obtained by Wild Well								$ 50.0
Amounts to be funded in Escrow account by Wild Well								50.0
Escrowed cash included in intangible and other long-term assets, net	50.1	33.0
Deferred revenue included in other long-term liabilities	24.6	16.2
Equity-method ownership percentage					10.00%
Contractual arrangements fixed sum						750
Costs and estimated earnings in excess of billings included in other current assets	$ 133.5	$ 146.9					$ 129.7	$ 144.5