v3.26.3
Long-term and Short-term Debt - Schedule of Long-term Debt (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Sep. 30, 2025
Long-term debt    
Unamortized discount, capitalized lease obligations and other $ (29) $ (26)
Total debt 2,571 2,616
Less: Current portion (2) (2)
Long-term debt $ 2,569 2,614
6.70% debentures, payable in January 2028    
Long-term debt    
Stated interest rate (in percent) 6.70%  
Debt instruments $ 250 250
3.50% notes, payable in March 2029    
Long-term debt    
Stated interest rate (in percent) 3.50%  
Debt instruments $ 425 425
1.75% notes, payable in August 2031    
Long-term debt    
Stated interest rate (in percent) 1.75%  
Debt instruments $ 450 450
6.25% debentures, payable in December 2037    
Long-term debt    
Stated interest rate (in percent) 6.25%  
Debt instruments $ 250 250
4.20% notes, payable in March 2049    
Long-term debt    
Stated interest rate (in percent) 4.20%  
Debt instruments $ 575 575
2.80% notes, payable in August 2061    
Long-term debt    
Stated interest rate (in percent) 2.80%  
Debt instruments $ 450 450
5.20% debentures, payable in January 2098    
Long-term debt    
Stated interest rate (in percent) 5.20%  
Debt instruments $ 200 200
Sensia loans from SLB, payable in October 2026    
Long-term debt    
Debt instruments $ 0 $ 42