Financial Instruments and Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2025

Fair Value Disclosures [Abstract]

Schedule of Cash and Cash Equivalents

The following reconciles Cash and equivalents and Restricted cash reported within the Consolidated Balance Sheets as of September 30, 2025 and September 30, 2024, to the total amounts shown in the Consolidated Statements of Cash Flows:

	September 30, 2025		September 30, 2024
Cash and equivalents	$	225.5	$	267.5
Restricted cash	3.1		6.7
Cash and equivalents and restricted cash	$	228.6	$	274.2

Schedule of Restrictions on Cash

The following reconciles Cash and equivalents and Restricted cash reported within the Consolidated Balance Sheets as of September 30, 2025 and September 30, 2024, to the total amounts shown in the Consolidated Statements of Cash Flows:

	September 30, 2025		September 30, 2024
Cash and equivalents	$	225.5	$	267.5
Restricted cash	3.1		6.7
Cash and equivalents and restricted cash	$	228.6	$	274.2

Schedule of Notional Amounts of Derivative Instruments

The notional amounts of the Company’s foreign currency-related derivative instruments were as follows:

	Hedge Designation	September 30, 2025		September 30, 2024
Foreign exchange contracts (a)	Undesignated	$	9.7	$	4.5

a.Represent hedges of transactional foreign exchange exposures resulting primarily from intercompany and third-party transactions. Gains and losses on these instruments are recognized immediately in Other income (expense), net. These gains and losses are largely offset by gains and losses on the underlying hedged items, as well as the hedging costs associated with the derivative instruments. Gains and losses recognized to date on these instruments were not material to the Company's Consolidated Financial Statements.