Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

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

The carrying value and estimated fair value of our total long-term debt and finance leases, including current maturities, were as follows (in millions):

	March 31, 2024				September 30, 2023
	Carrying		Fair		Carrying		Fair
	Value		Value		Value		Value
Long-term debt and finance leases, including current maturities(1)	$	400.1	$	376.8	$	538.3	$	493.6

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