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Contingencies (Details) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Apr. 30, 2009 USD ($) | Apr. 30, 2009 EUR (€) | Dec. 31, 2011 USD ($) | Dec. 31, 2011 Standby Letters of Credit [Member] USD ($) | Dec. 31, 2011 Guarantees [Member] USD ($)
Contingencies [Abstract] |  |  |  |  |
Fine levied and paid related to competition investigation | $ 55.9 | € 42.0 |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Guarantee contracts and stand-by letters of credit |  |  | $ 174.0 | $ 38.6 | $ 135.4

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