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Income Taxes - Additional information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Mar. 31, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Taxes                
Tax Cuts and Jobs Act, change in tax rate, income tax expense (benefit)   $ (126,000,000)       $ 6,000,000    
Tax expense, issuance of new US Treasury regulations     $ 8,000,000     1,000,000    
Tax Cuts and Jobs Act of 2017, transition tax for accumulated foreign earnings, provisional liability $ 1,000,000 (145,000,000)       1,000,000 $ (145,000,000)  
Cumulative foreign earnings   1,300,000,000            
Tax Cuts and Jobs Act of 2017, deferred tax asset, existing income tax expense (benefit)   19,000,000            
Impairment of goodwill and acquired intangibles 0       $ 57,000,000      
Income tax (benefit) expense           (3,000,000) 125,000,000 $ 96,000,000
Effective income tax rate reconciliation, excess tax expense     5,000,000          
Net operating loss and tax credit carryforwards 63,000,000         63,000,000    
Valuation allowance 38,000,000         38,000,000    
Tax liability related to uncertain tax positions 34,000,000 28,000,000 $ 30,000,000     34,000,000 28,000,000 $ 30,000,000
Uncertain tax positions recognized as current liability on balance sheet 34,000,000         34,000,000    
Uncertain tax positions 17,000,000 $ 14,000,000       17,000,000 $ 14,000,000  
Uncertain tax positions related to business acquisitions not recognized on balance sheet 17,000,000         17,000,000    
Interest accruals related to uncertain tax liabilities 2,000,000         2,000,000    
United States And Certain Foreign Jurisdictions                
Income Taxes                
Net operating loss carryforwards in the United States and certain foreign jurisdictions 11,000,000         11,000,000    
Domestic Tax Authority                
Income Taxes                
Net operating loss carryforwards in the United States and certain foreign jurisdictions 1,000,000         1,000,000    
Research Tax Credit Carryforward                
Income Taxes                
Research and development tax credit carryforwards $ 51,000,000         $ 51,000,000    
Marketing Applications                
Income Taxes                
Income tax (benefit) expense       $ 22,000,000