Business Combinations	9 Months Ended
Sep. 30, 2011
Business Combinations [Abstract]
Business Combinations	2. Business Combinations In December 2010, we acquired the assets of a proprietary sulfur recovery technology business for $1,000. The sulfur recovery technology is used to treat gas streams containing hydrogen sulfide for the purpose of reducing the sulfur content of fuel products and to recover a saleable sulfur by-product. The acquisition includes patents, know-how and skilled personnel. The purchase price allocation and pro forma information for this acquisition were not material to our consolidated financial statements. This company's financial results are included within our Global E&C Group business segment.

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

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