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Debt and Financing Arrangements - Short-Term Debt (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Sep. 30, 2021
Short-term Debt [Line Items]    
Short-term debt $ 669 $ 8
Weighted average interest rate on short-term debt outstanding 0.50% 0.20%
Bank borrowings    
Short-term Debt [Line Items]    
Short-term debt $ 10 $ 8
Commercial paper    
Short-term Debt [Line Items]    
Short-term debt 172 0
Term loans    
Short-term Debt [Line Items]    
Short-term debt $ 487 $ 0