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Long-Term Employee Benefit Liabilities - Company's Termination and Long Service Arrangements (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]    
Non-current liability $ 677 $ 597
Termination and Long Service Arrangements [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Beginning of year 394 378
Current service cost 29 22
Interest cost 10 8
Actuarial losses and changes in actuarial assumptions 39 14
Benefits paid (19) (14)
(Divestiture) acquisition (3) 2
Foreign exchange (4) (16)
Ending funded status 446 394
Current liability 9 9
Liabilities held for sale   4
Non-current liability 437 381
Net amount 446 394
Unrecognized actuarial losses (124) (88)
Current service cost 29 22
Interest cost 10 8
Actuarial losses (gains) 4 (1)
Net periodic benefit cost $ 43 $ 29