Other Balance Sheet and Statement of Operations Information - Other Non-Operating Interest (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Balance Sheet And Statement Of Operations Information [Abstract]
FX gain (loss)	$ 2	$ (8)	$ 0	$ 5
Net periodic pension costs - other components (1)	(3)	4	1	7
Income/(loss) from investments in non-consolidated affiliates	1	3	9	0
Other	6	17	12	16
Total	$ 6	$ 16	$ 22	$ 28