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Acquisition - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Feb. 28, 2022
Jun. 30, 2022
Jun. 30, 2022
Business Acquisition [Line Items]      
Businesses acquisition, net of cash acquired     $ 9
Gain on bargain purchase of a business     $ 24
Accounts Payable and Accrued Liabilities [Member]      
Business Acquisition [Line Items]      
Gain on bargain purchase of a business $ 24    
Tokai Carbon Group(Tianjin) Co. [Member]      
Business Acquisition [Line Items]      
Business acquisition, ownership percentage 100.00%    
Business acquisition, purchase price $ 9    
Business acquisition, cash consideration 14 $ 14  
Businesses acquisition, net of cash acquired 5    
Gain on bargain purchase of a business $ 24