Financial Instruments and Risk Management (Schedule of Gains and Losses on Derivative Instruments) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| OCI gain (loss) on cash flow hedge, reclassification before tax | $ 0.7 | $ (0.2) | $ 0.5 | $ 1.5 |
| FX contract | Designated as hedging instrument | Cash flow hedging | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) | 2.2 | (5.5) | 6.0 | (0.6) |
| FX contract | Not designated as hedging instrument | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Change in estimate of fair value of foreign currency contracts | $ 0.3 | $ (0.3) | $ 1.0 | $ 0.3 |
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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