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Financial Instruments (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Minimum |  |  |
Guarantor Obligations [Line Items] |  |  |
Number of countries in which entity has currency exposures | 50 |  |
Stand by letters of credit, bonds and bank guarantees |  |  |
Guarantor Obligations [Line Items] |  |  |
Contingent liability outstanding | $ 208.8 | $ 273.6 |
Stand by letters of credit, bonds and bank guarantees | Minimum |  |  |
Guarantor Obligations [Line Items] |  |  |
Fees paid to various banks and insurance companies on face amount of instruments (as a percent) | 0.32% |  |
Stand by letters of credit, bonds and bank guarantees | Maximum |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee term | 5 years |  |
Fees paid to various banks and insurance companies on face amount of instruments (as a percent) | 1.93% |  |
Guarantees of debt of certain third parties related to international operations |  |  |
Guarantor Obligations [Line Items] |  |  |
Service revenues | 1.3 | 1.2 | 1.9
Potential amount of future payments for guarantees, maximum | 0.7 | 1.6 |
Environmental indemnification for properties sold to third party in 2007 | Maximum |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee term | 20 years |  |
Environmental indemnification for property from a lease terminated in 2006 |  |  |
Guarantor Obligations [Line Items] |  |  |
Potential amount of future payments for guarantees, maximum | 3.0 |  |
Guarantees related to arrangements with certain customers |  |  |
Guarantor Obligations [Line Items] |  |  |
Potential amount of future payments for guarantees per occurrence, maximum | $ 3.0 |  |
Guarantees related to arrangements with certain customers | Maximum |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantee term | 4 years |  |

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- Definition Represents the percentage fee paid in relation to the guarantee obligation. + References No definition available. + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make per occurrence under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References No definition available. + Details
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- Definition Guarantee Obligations Term + References No definition available. + Details
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- Definition Number of Countries in Which Entity Has Currency Exposures + References No definition available. + Details
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- Definition Revenues from entities of which the Company provides guarantees. + References No definition available. + Details
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X
- Definition The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph b -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 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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