v3.26.1
Debt
 6 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
Debt Debt
The detail of long-term debt was as follows:
March 31,
2026		September 30,
2025
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 Facility— 140.0 
Total1,250.0 1,390.0 
Less unamortized debt issuance costs and discount (1)
5.6 6.7 
Total long-term debt$1,244.4 $1,383.3 
(1)As of March 31, 2026, debt issuance costs were $3.2 and $2.4 related to the Senior Notes due 2028 and the Senior Notes due 2029, respectively. As of September 30, 2025, debt issuance costs were $3.9 and $2.8 related to the Senior Notes due 2028 and the Senior Notes due 2029, respectively.
As of March 31, 2026 and September 30, 2025, the Company had outstanding short-term notes payable with financial institutions with original maturities of less than 90 days of $35.1 and $29.5, respectively, with weighted-average interest rates of 3.4% and 3.7% as of March 31, 2026 and September 30, 2025, respectively. These notes were primarily outstanding international borrowings.