Employee Postretirement Benefits - Schedule of Amounts Recognized in Balance Sheet (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	$ 0	$ 78
Accrued benefit costs and other current liabilities	(7)	(3)
Deferred credits and other liabilities	(9)	(12)
Net amount recognized at end of year	(16)	63
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Accrued benefit costs and other current liabilities	(12)	(12)
Deferred credits and other liabilities	(121)	(175)
Net amount recognized at end of year	$ (133)	$ (187)