Amount of increase (decrease) in value of liability in contingent consideration arrangement in business combination, including, but not limited to, difference arising upon settlement.

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Maximum amount of estimate for undiscounted range of outcomes in contingent consideration arrangement in business combination.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

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Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payment on derivative.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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Derivative Financial Instruments and Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Sep. 30, 2025	Jun. 30, 2022	Sep. 30, 2021
FY 2025 Fourth Quarter Acquisition
Derivative [Line Items]
Maximum value of contingent consideration issued			$ 17.7
Gain related to contingent consideration issued	$ 6.6
Equity investment
Derivative [Line Items]
Gain (loss) recorded representing increase in fair value	8.6
Credit facility investment
Derivative [Line Items]
Gain (loss) recorded representing increase in fair value		$ (6.9)
Interest Rate Swap \| Cash Flow Hedging \| Designated as Hedging Instrument
Derivative [Line Items]
Material losses recognized in income	0.0	$ 0.0
Interest Rate Cap \| Cash Flow Hedging \| Designated as Hedging Instrument
Derivative [Line Items]
Notional value				$ 300.0
Fixed interest rate (as percent)				3.465%
Derivative, basis spread on variable rate (as percent)				3.465%
February 2023 \| United States of America, Dollars \| Interest Rate Swap \| Cash Flow Hedging \| Designated as Hedging Instrument
Derivative [Line Items]
Notional value	$ 400.0		$ 400.0		$ 400.0
Fixed interest rate (as percent)	1.283%		1.283%