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Income Taxes - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Contingency [Line Items]        
Effective tax rate includes favorable tax adjustment   $ 4,600,000 $ 1,600,000  
Increase negative effective tax rate   2.60%    
Nondeductible goodwill   15.00% 103.50%  
Effective income tax rate include non-deductible goodwill and asset impairment charge   73,600,000 121,700,000  
Effective Income Tax Rate Reconciliation, Tax Credits, Foreign     16.70%  
Unrecognized tax benefits that would impact effective tax rate   18,800,000 23,900,000  
Short-term reserves   10,900,000    
Long-term reserves   13,600,000    
Interest and penalties   3,794,000 4,532,000 3,892,000
Unrecognized tax benefits, income tax penalties and interest expense recognized   500,000 600,000 700,000
Gross unrecognized tax benefits change range, minimum   0    
Gross unrecognized tax benefits change range, maximum   11,500,000    
Net operating loss carry forwards, for state income tax purposes   125,300,000    
Foreign subsidiary earnings   128,200,000    
Amount of earnings to be repatriated from foreign subsidiaries upon asset divestiture $ 39,000,000