Components of Net Periodic Benefit Cost (Detail) - Pension Plans, Defined Benefit - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
U.S. Pension Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 2	$ 1	$ 6	$ 6
Interest cost	3	3	7	9
Expected return on plan assets	(4)	(4)	(13)	(12)
Amortization of actuarial loss	0	1	1	2
Settlement loss	3	4	3	4
Net Periodic Benefit Cost	3	5	4	9
Non-U.S. Pension Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	3	3	9	9
Interest cost	1	1	4	4
Expected return on plan assets	(1)	0	(1)	(1)
Amortization of actuarial loss	0	1	1	2
Net Periodic Benefit Cost	$ 4	$ 5	$ 13	$ 14