v3.26.1
Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Schedule Of Goodwill And Finite Lived Intangible Assets [Line Items]        
Goodwill impairment charges $ 0 $ 706 $ 0 $ 706
Finite-Lived Intangible Assets, Net [Abstract]        
Other intangibles amortization expense 15 15 46 47
Expected future amortization expense [Abstract]        
2026 (includes nine months actual and three months estimated) 60   60  
2027 37   37  
2028 34   34  
2029 27   27  
2030 19   19  
Trademarks and Trade Names [Member]        
Intangible Assets, Net [Abstract]        
Impairment charges $ 0   $ 0  
Minimum [Member] | Trademarks and Trade Names [Member]        
Intangible Assets, Net [Abstract]        
Useful life (in years) 3 years   3 years  
Minimum [Member] | Intellectual Property [Member]        
Intangible Assets, Net [Abstract]        
Useful life (in years) 3 years   3 years  
Minimum [Member] | Customer Lists [Member]        
Intangible Assets, Net [Abstract]        
Useful life (in years) 10 years   10 years  
Maximum [Member] | Trademarks and Trade Names [Member]        
Intangible Assets, Net [Abstract]        
Useful life (in years) 20 years   20 years  
Maximum [Member] | Intellectual Property [Member]        
Intangible Assets, Net [Abstract]        
Useful life (in years) 20 years   20 years  
Maximum [Member] | Customer Lists [Member]        
Intangible Assets, Net [Abstract]        
Useful life (in years) 24 years   24 years  
Life Sciences [Member]        
Schedule Of Goodwill And Finite Lived Intangible Assets [Line Items]        
Goodwill impairment charges   375   375
Pre-impairment goodwill $ 841   $ 841  
Specialty Additives [Member]        
Schedule Of Goodwill And Finite Lived Intangible Assets [Line Items]        
Goodwill impairment charges   $ 331   $ 331
Pre-impairment goodwill $ 443   $ 443