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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Changes in liability for unrecognized tax benefits [Roll forward]      
Beginning Balance $ 5.0 $ 5.6  
Additions for tax positions taken in the current year 1.3 0.6  
Additions for tax positions of prior years 0.7 1.1  
Reduction for expiration of statute of limitations/audits (0.7) (2.3)  
Ending Balance 6.3 5.0 5.6
Income tax uncertainties [Abstract]      
Accrued liabilities for interest and penalties 0.4 0.4  
Tax-related interest expense 0.1    
Tax-related interest income   0.1  
Unrecognized tax benefits that would favorably impact the effective income tax rate 5.9    
Amount of unrecognized tax benefits which may change 0.3    
U.S. operations 15.8 7.2 6.5
International operations 76.9 67.3 76.6
Income before income taxes 92.7 74.5 83.1
Current: [Abstract]      
Federal 0 0.6 0.3
State 0 0.2 0.1
International 20.6 14.6 17.9
Current income tax provision 20.6 15.4 18.3
Deferred: [Abstract]      
Federal and state 2.7 (0.5) (5.1)
International 0.2 (1.3) 0.3
Deferred income tax provision 2.9 (1.8) (4.8)
Income tax expense 23.5 13.6 13.5
Deferred tax assets [Abstract]      
Net operating loss carryforwards 21.7 28.1  
Tax credit carryforwards 42.5 33.3  
Restructuring and impairment charges 1.7 5.5  
Capital loss carryforwards 0 1.4  
Pension and deferred compensation 62.3 48.6  
Other 9.3 8.7  
Valuation allowance (19.3) (24.9)  
Total deferred tax assets 118.2 100.7  
Deferred tax liabilities: [Abstract]      
Accelerated depreciation 41.2 39.5  
Other 6.5 7.1  
Total deferred tax liabilities 47.7 46.6  
Net deferred tax asset 70.5 54.1  
U.S. federal corporate tax rate 35.00% 35.00% 35.00%
Tax on international operations less than U.S. tax rate (8.90%) (11.00%) (7.60%)
Non-benefited losses 0.00% 1.40% 2.00%
Reversal of prior valuation allowance (0.10%) (0.20%) (1.20%)
Reversal of reserves for unrecognized tax benefits 0.00% (3.00%) (3.40%)
U.S. tax on international earnings, net of foreign tax credits (1.50%) (2.20%) (3.20%)
State income taxes, net of federal tax effect 0.70% (1.60%) (1.10%)
General business credits and Section 199 Deduction (2.40%) (1.50%) (5.40%)
Other 2.50% 1.40% 1.10%
Effective tax rate 25.30% 18.30% 16.20%
Operating Loss Carryforwards [Line Items]      
Deferred tax asset attributable to carryforwards 21.7 28.1  
Tax credit carryforwards, expiration date [Abstract]      
Undistributed earnings reinvested indefinitely in foreign subsidiaries 568.2    
Federal Jurisdiction [Member] | Research and Development [Member]
     
Tax Credit Carryforward [Line Items]      
Tax credit carryforwards 9.2    
Tax credit carryforwards, expiration date [Abstract]      
2021 0.1    
2022 0.5    
Expiring after 2022 8.6    
Foreign Jurisdiction [Member]
     
Deferred tax assets [Abstract]      
Net operating loss carryforwards 6.6    
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 26.3    
Deferred tax asset attributable to carryforwards 6.6    
Foreign loss carryforwards with no expiration date 15.7    
Foreign Jurisdiction [Member] | Foreign Credit [Member]
     
Tax Credit Carryforward [Line Items]      
Tax credit carryforwards 27.5    
Tax credit carryforwards, expiration date [Abstract]      
2012 2.6    
2014 0.4    
2015 3.5    
2016 1.8    
2017 2.4    
2018 1.9    
2019 3.1    
2020 3.2    
2021 8.6    
State Jurisdiction [Member]
     
Deferred tax assets [Abstract]      
Net operating loss carryforwards 15.1    
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards 255.4    
Deferred tax asset attributable to carryforwards 15.1    
State loss carryforwards expiring in 2013 0.1    
State loss carryforwards expiring after 2013 255.3    
State Jurisdiction [Member] | Research and Development [Member]
     
Tax Credit Carryforward [Line Items]      
Tax credit carryforwards 3.5    
Tax credit carryforwards, expiration date [Abstract]      
2021 0.8    
2022 0.8    
Expiring after 2022 $ 1.9