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Employee Benefit Plans - Change in Benefit Obligation, Plan Assets and Funded Status of Defined Benefit Pension Plans (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets at beginning of year $ 601  
Fair value of plan assets at end of year 543 $ 601
Pension Benefits [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Benefit obligation at beginning of year 703 792
Service cost 5 6
Interest cost 25 26
Actuarial loss (gain) 42 (38)
Benefits paid (30) (34)
Exchange rate loss (gain) (37) (33)
Acquisitions (disposals) 2  
Curtailments (71)  
Settlements (17) (16)
Benefit obligation at end of year 622 703
Fair value of plan assets at beginning of year 601 660
Actual return 60 3
Benefits paid (30) (34)
Company contributions 16 12
Exchange rate gain (loss) (34) (23)
Curtailments (71)  
Acquisitions (disposals) 1 (17)
Fair value of plan assets at end of year 543 601
Funded status (79) (102)
Accumulated benefit obligation at end of year 617 685
Postretirement Benefits [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Benefit obligation at beginning of year 90 53
Interest cost 3 3
Actuarial loss (gain) (29) (7)
Benefits paid (16) (5)
Participants contributions 2 1
Other 42 45
Benefit obligation at end of year 92 90
Benefits paid (16) (5)
Company contributions 14 4
Participants contributions 2 1
Funded status $ (92) $ (90)