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Investments - Additional Information (Detail) - USD ($)
3 Months Ended
Feb. 15, 2022
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Alcoa Corporation [Member]        
Schedule Of Equity Method Investments [Line Items]        
Charges recorded   $ 62,000,000    
Alcoa Corporation [Member] | Other Nonoperating Income Expense [Member]        
Schedule Of Equity Method Investments [Line Items]        
Charges recorded   41,000,000 $ 21,000,000  
Mineracao Rio do Norte S.A [Member] | Brazil [Member]        
Schedule Of Equity Method Investments [Line Items]        
Asset impairment charges $ 58,000,000      
Proceeds from Sale of Long-term Investments 10,000,000      
Additional cash to be received upon satisfying post closing conditions $ 30,000,000      
ELYSIS TM Limited Partnership [Member]        
Schedule Of Equity Method Investments [Line Items]        
Basis in investment, due to share of losses   0   $ 0
Unrecognized losses   $ (60,000,000)