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Income Taxes Rate Reconciliation (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 35.00% 35.00% 35.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential (34.60%) (42.90%) 11.60%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes (1.20%) 1.60% 0.10%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance (30.70%) (39.30%) (10.20%)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings 26.30% 49.60% (33.20%)
Effective Income Tax Rate Reconciliation, NOL Carryback Refund 0.00% 0.00% 16.40%
Effective Income Tax Rate Reconciliation, Other Adjustments 5.90% (0.40%) (5.00%)
Effective Income Tax Rate, Continuing Operations 0.70% 3.60% 14.70%
2010 Tax Benefit from the Monetization of AMT and R&D Credits   $ 1.4  
2011 Net Tax Benefit from Audit Settlements and Reversal of State DTL's 4.5    
2009 Income Tax Benefit Attributable to the Carryback of a Net Operating Loss and Recording a Valuation Allowance     48.8
2009 Deferred Tax Liability, Impact of Undistributed Earnings of Foreign Subsidiaries     $ 118.8