Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Carrying Value and Estimated Fair Value of Long-term Debt, Including Current Maturities

The carrying value and estimated fair value of the Company's long-term debt, including current maturities, were as follows (in millions):

	September 30, 2023				September 30, 2022
	Carrying		Fair		Carrying		Fair
	Value		Value		Value		Value
Long-term debt and finance leases, including    current maturities(1)	$	538.3	$	493.6	$	615.3	$	541.7

Current and prior period long-term debts' carrying and fair values exclude net debt issuance costs.