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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Effective tax rates for discontinued operations 16.20% 40.70% 37.70%  
Statutory U.S. federal rate 35.00% 35.00% 35.00%  
Valuation allowance, deferred tax assets $ 19 $ 29    
Operating loss carryforwards 438.0      
Operating loss carryforwards, expiration dates 2024      
Unrecognized tax benefits at end of year 56.0 41.2 45.9 41.7
Unrecognized tax benefits recognition impact on effective tax rate 28.1      
International [Member]
        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Operating loss carryforwards $ 0.3      
Operating loss carryforwards, expiration dates 2032      
Minimum [Member]
        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Statute of limitation period for open tax reviews 3 years      
Maximum [Member]
        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Statute of limitation period for open tax reviews 4 years