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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Tax Credit Carryforward [Line Items]        
Effective income tax rate 7.90% (30.20%)    
Unrealized foreign tax credits $ 404      
Non-current deferred tax assets reclassified to non-current deferred tax liabilities 86 $ 130    
Unrecognized tax benefit 78 46 $ 115 $ 127
Total uncertain tax position identified in foreign jurisdiction   69    
Reduction in unrecognized tax position completion of audits in foreign jurisdictions 21 75    
Decrease in unrecognized tax benefits is reasonably possible 15      
Income tax interest and penalties related to unrecognized tax benefit 10 1 $ 1  
Accrued income tax interest and penalties related to unrecognized tax benefit 15 5    
Foreign tax credit 404      
Net operating loss carry forward 699      
Tax-deductible goodwill 175      
Undistributed earnings of foreign subsidiaries $ 5,673      
Maximum [Member]        
Tax Credit Carryforward [Line Items]        
Period of amortization of goodwill 15 years      
Accounting Standards Update 2015-17 [Member]        
Tax Credit Carryforward [Line Items]        
Current deferred tax assets reclassified to non-current deferred tax liabilities   376    
Non-current deferred tax assets reclassified to non-current deferred tax liabilities   358    
Current deferred tax liabilities reclassified to non-current deferred tax liabilities   $ 291    
Carry Forward Expiration Year 2020 [Member]        
Tax Credit Carryforward [Line Items]        
Net operating loss carry forward $ 11      
Carry Forward Expiration Year 2022 [Member]        
Tax Credit Carryforward [Line Items]        
Net operating loss carry forward 141      
Carry Forward Expiration Year 2026 [Member]        
Tax Credit Carryforward [Line Items]        
Net operating loss carry forward $ 252