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Insurance Recoveries - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Business Interruption Loss [Line Items]        
Insurance loss proceeds     $ 5  
Pepinster, Belgium [Member]        
Business Interruption Loss [Line Items]        
Insurance proceeds     14  
Pepinster, Belgium [Member] | Flood [Member]        
Business Interruption Loss [Line Items]        
Flood-related expenses   $ 1   $ 7
Insurance gain proceeds $ 0   9  
Insurance loss proceeds 4      
Insurance proceeds $ 8      
Cash provided by investing activities     12  
Cash provided by operating activities     $ 2