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Employee Benefit Plans (Details 2) | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
United States plan [Member] |  |  |
Assumption rates used for net periodic benefit costs |  |  |
Discount rate: | 4.95% | 5.26% | 6.23%
Expected return on assets: |  | 7.50% | 7.75%
Expected return on assets, minimum: | 5.50% |  |
Expected return on assets, maximum: | 6.50% |  |
International plans [Member] |  |  |
Assumption rates used for net periodic benefit costs |  |  |
Discount rate minimum: | 5.25% | 5.25% | 5.75%
Discount rate maximum: | 5.65% | 5.75% | 6.50%
Salary increase minimum: | 2.00% | 2.50% | 2.50%
Salary increase maximum: | 4.33% | 4.25% | 4.50%
Expected return on assets, minimum: | 4.50% | 6.00% | 6.00%
Expected return on assets, maximum: | 7.06% | 6.85% | 6.85%

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- Definition Defined benefit plan assumptions used calculating net periodic benefit cost expected long term return on assets maximum. + References No definition available. + Details
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- Definition Defined benefit plan assumptions used calculating net periodic benefit cost rate of compensation increase maximum. + References No definition available. + Details
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- Definition The interest rate used to adjust for the time value of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512013 -Topic 715 -SubTopic 30 + Details
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