Pension Plans, Postretirement and Other Employee Benefits - Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension Plans | U.S.
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 1	$ 1
Interest cost	53	21	10
Expected return on plan assets	(67)	(28)	(14)
Curtailment loss (gain)	0	0	0
Settlement loss	6	1	8
Net Amortization [Abstract]
Actuarial loss	5	5	5
Prior service cost (credit)	0	0	0
Net periodic costs	(1)	0	10
Pension Plans | Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Service cost	24	14	9
Interest cost	24	15	13
Expected return on plan assets	(19)	(18)	(25)
Curtailment loss (gain)	0	0	0
Settlement loss	1	3	1
Net Amortization [Abstract]
Actuarial loss	5	6	9
Prior service cost (credit)	1	1	1
Net periodic costs	36	21	8
Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	0	0
Interest cost	13	8	5
Expected return on plan assets	0	0	0
Curtailment loss (gain)	(7)	1	0
Settlement loss	0	0	0
Net Amortization [Abstract]
Actuarial loss	4	5	4
Prior service cost (credit)	(8)	0	(1)
Net periodic costs	$ 3	$ 14	$ 8