Financial Instruments and Risk Management (Schedule of Gains and Losses on Derivative Instruments) (Details) - USD ($) $ in Millions |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration] | Nonoperating Income (Expense) | Nonoperating Income (Expense) | ||||
| Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Nonoperating Income (Expense) | Nonoperating Income (Expense) | ||||
| FX contract | Designated as hedge | Cash flow hedge | ||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Gain (loss) recognized in OCI | [1] | $ (7.1) | $ 1.8 | |||
| Gain (loss) reclassified from AOCI into income (effective portion) | [1],[2] | 4.9 | 1.3 | |||
| FX contract | Not designated as hedge | ||||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Gain (loss) recognized in income | [2] | $ 2.7 | $ (1.1) | |||
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