Debt (Tables)

9 Months Ended

Jun. 30, 2023

Debt Disclosure [Abstract]

Schedule of Long-term Debt

The detail of long-term debt was as follows:

	June 30, 2023		September 30, 2022
Senior notes, fixed interest rate of 5.500%, due 2028	$	750.0	$	750.0
Senior notes, fixed interest rate of 4.125%, due 2029	500.0		500.0
U.S. revolving credit facility (1)	85.0		155.0
Total	1,335.0		1,405.0
Less unamortized debt issuance costs and discount (2)	11.9		13.6
Total long-term debt	$	1,323.1	$	1,391.4

(1)The U.S. revolving credit facility matures in April 2025.

(2)As of June 30, 2023, the balance for the Senior Notes due 2028 and the Senior Notes due 2029 are reflected net of debt issuance costs of $7.2 and $4.7, respectively. As of September 30, 2022, the balance for the Senior Notes due 2028 and the Senior Notes due 2029 are reflected net of debt issuance costs of $8.3 and $5.3, respectively.

Additionally, t