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Net Interest and Other Financial Costs (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other Income and Expenses [Abstract]
Interest income		$ (18)	$ (2)	$ (23)	$ (3)
Interest expense		324	337	634	688
Interest capitalized		(25)	(19)	(48)	(36)
Pension and other postretirement non-service costs	[1]	32	56	11	56
Other financial costs (credits)		(1)	0	0	20
Net interest and other financial costs		$ 312	$ 372	$ 574	$ 725
[1] See Note 22.

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