v3.25.1
Debt
 6 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
Debt Debt
The detail of long-term debt was as follows:
March 31,
2025		September 30,
2024
Senior notes, fixed interest rate of 5.5%, due 2028$750.0 $750.0 
Senior notes, fixed interest rate of 4.1%, due 2029500.0 500.0 
U.S. Revolving Credit Facility191.0 34.0 
Total1,441.0 1,284.0 
Less unamortized debt issuance costs and discount (1)
7.9 9.0 
Total long-term debt$1,433.1 $1,275.0 
(1)As of March 31, 2025, debt issuance costs were $4.7 and $3.2 related to the Senior Notes due 2028 and the Senior Notes due 2029, respectively. As of September 30, 2024, debt issuance costs were $5.4 and $3.6 related to the Senior Notes due 2028 and the Senior Notes due 2029, respectively.
As of March 31, 2025 and September 30, 2024, the Company had outstanding short-term notes payable with financial institutions with original maturities of less than 90 days of $27.2 and $24.5, respectively, with weighted-average interest rates of 3.8% as of both March 31, 2025 and September 30, 2024. These notes were primarily outstanding international borrowings.