Other Financial Information - Schedule of Other Income, Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Other Income And Expenses [Abstract]
Equity loss (income)	$ 36	$ (30)	$ (17)	$ (61)
Foreign currency loss (gain), net	9	(4)	17	2
Net loss (gain) from asset sales	2	(8)	7	(132)
Net (gain) loss on mark-to-market derivative instruments	(8)	9	(199)	2
Non-service costs – Pension & OPEB	13	13	44	37
Other	(17)	2	(37)	5
Other income , net	$ 35	$ (18)	$ (185)	$ (147)