Components of Net Periodic Benefit Cost (Detail) - Pension Plans, Defined Benefit - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
U.S. Pension Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 2	$ 2	$ 4	$ 4
Interest cost	2	3	5	7
Expected return on plan assets	(5)	(4)	(9)	(8)
Amortization of prior service (credit) cost	1	(1)	0	(1)
Amortization of actuarial loss	1	1	1	1
Net Periodic Benefit Cost	1	1	1	3
Non-U.S. Pension Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	3	3	6	6
Interest cost	2	1	3	3
Expected return on plan assets	(1)	0	(1)	(1)
Amortization of prior service (credit) cost	0	0	0	0
Amortization of actuarial loss	1	0	1	1
Net Periodic Benefit Cost	$ 5	$ 4	$ 9	$ 9