Restructuring - Schedule of Changes in Balance Sheet Position of Employee Related Restructuring Reserves (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Provision - charge	$ 0		$ 0
Restructuring employee-related
Restructuring Cost and Reserve [Line Items]
Reserve at beginning of the period	121	$ 193	151	$ 213
Provision - charge	1	13	2	14
Provision - reversal	0	0	0	0
Cash payments	(15)	(15)	(50)	(30)
Translation difference	9	(1)	14	(7)
Reserve at end of the period	$ 117	$ 189	$ 117	$ 189