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Balance Sheet Information - Equity Method Investment (Details) (NSK Warner [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Nov. 30, 2011
Dec. 31, 2010
Nov. 30, 2010
Nov. 30, 2009
NSK Warner [Member]
           
Schedule of Equity Method Investments [Line Items]            
Equity investment in NSK Warner, percent 50.00%          
Joint Venture Partner Interest In Subsidiary 40.00%          
Equity Method Investment, Dividends or Distributions $ 28.1 $ 33.4   $ 35.5    
Equity Method Investment, Summarized Financial Information [Abstract]            
Cash and securities     123.3   119.4  
Current assets, including cash and securities     320.0   344.1  
Non-current assets     175.3   182.0  
Current liabilities     147.4   172.1  
Non-current liabilities     50.2   45.3  
Total equity     297.7   308.7  
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]            
Net sales     696.7   655.2 634.7
Gross profit     138.2   128.5 131.9
Net earnings     68.5   61.6 68.3
Purchases from Equity Method Investee $ 22.8 $ 16.6   $ 14.6