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Acquisition - Additional Information (Detail) - Tokai Carbon Group Tianjin Co
$ in Millions
Feb. 28, 2022
USD ($)
Business Acquisition [Line Items]  
Business acquisition, purchase price $ 9
Business acquisition, cash consideration 14
Businesses acquisition, net of cash acquired $ 5
Tokai Carbon's Registered Capital [Member]  
Business Acquisition [Line Items]  
Business acquisition, ownership percentage 100.00%