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Reportable Segments and Geographic Information - Geographic Information (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
--- | --- | --- | ---
Geographic Information |  |  |
Long-Lived Assets | $ 4,624.3 | $ 5,032.4 | $ 5,200.1
Americas |  |  |
Geographic Information |  |  |
Long-Lived Assets | 3,478.5 | 3,906.7 | 3,922.8
Europe, Middle East India, Africa |  |  |
Geographic Information |  |  |
Long-Lived Assets | 803.5 | 763.6 | 872.3
Asia-Australia-Pacific |  |  |
Geographic Information |  |  |
Long-Lived Assets | $ 342.3 | $ 362.1 | $ 405.0

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 + Details
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