Divestitures - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Business Disposition [Line Items]
Net gain from asset sales	$ (18)	$ (1)
Payments against the reserve	7	4	$ 26
Warrick Rolling Mill [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Business Disposition [Line Items]
Estimated Liabilities For Future Site Separation Commitment Charge	17
Payments against the reserve	14	$ 2
Remaining reserve	$ 49