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Commitments and Contingencies - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Loss Contingencies [Line Items]      
Range of reasonably possible losses, minimum $ 0    
Range of reasonably possible losses, maximum 25,000,000    
Credit arrangements 83,000,000    
Contingent liability 9,000,000    
Rental expense 51,000,000 $ 61,000,000 $ 70,000,000
Total future lease commitments 129,000,000    
Business Acquisition Acquiree One [Member]      
Loss Contingencies [Line Items]      
Business acquisition, maximum contingent consideration payments 6,000,000    
Business acquisition, fair value of contingent consideration payments 1,000,000    
Series of Individually Immaterial Business Acquisitions      
Loss Contingencies [Line Items]      
Rental expense 2,000,000    
Total future lease commitments $ 19,000,000    
Operating leases, expiry year 2028