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Employee Benefit Plans Changes in Benefit Obligations Plan Assets Funded Status and Reconciliation of Funded Status to Amounts Recognized in Consolidated Balance Sheets and in Accumulated Other Comprehensive Income (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Change in Postemployment Benefit Obligation          
Benefit obligation at January 1 $ 39 $ 27      
Service cost 6 4 $ 3    
Interest cost 1 1 1    
Actuarial (gain) loss 20 19      
Benefits paid (15) (11)      
Currency translation adjustments (2) (1)      
Benefit obligation at December 31 49 39 27    
Postemployment Benefits, Funded Status (Underfunded)       $ (49) $ (39)
Change in Pension Benefit Plan Assets          
Fair value of plan assets at January 1 67        
Fair value of plan assets at December 31 63 67      
Amounts Recognized in the Balance Sheet, Postemployment          
Current liabilities       (16) (5)
Non-current liabilities       (33) (34)
Non-current liabilities (39) (27) (27) (49) (39)
Amounts Recognized in Accumulated Other Comprehensive Income, Postemployment          
Unrecognized Net actuarial loss       23 6
Unrecognized Prior service (credit) cost       2 1
Total       25 7
Foreign Pension Plan          
Change in Pension Benefit Obligation          
Benefit obligation at January 1 130 129      
Service cost 8 9      
Interest cost 3 4      
Plan participant contributions 1 1      
Actuarial (gain) loss (9) 18      
Benefits paid (9) (19)      
Currency translation adjustments (9) (15)      
New plans 0 3      
Benefit obligation at December 31 115 130 129    
Change in Pension Benefit Plan Assets          
Fair value of plan assets at January 1 67 76      
Actual return on plan assets 1 7      
Company contributions 5 8      
Benefits paid (9) (19)      
Currency translation adjustments (2) (7)      
Plan participant contribution 1 1      
New plans 0 1      
Fair value of plan assets at December 31 $ 63 $ 67 $ 76    
Funded status (underfunded)       (52) (63)
Amounts Recognized in Balance Sheet, Pension          
Non-current assets       5 4
Current liabilities       (1) (1)
Non-current liabilities       (56) (66)
Net amounts recognized       (52) (63)
Amounts Recognized in Accumulated Other Comprehensive Income, Pension          
Unrecognized Net actuarial loss       19 33
Unrecognized Prior service (credit) cost       (1) 0
Total       $ 18 $ 33