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EQUITY - Share Repurchases (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022 | Feb. 06, 2020
Accelerated Share Repurchases [Line Items] |  |  |  |
Number of common shares repurchased (in shares) |  |  | 1.1 |
Value of common shares repurchased to be held in treasury |  |  | $ 175.0 |
Tax withholding | $ 5.1 | $ 9.3 | $ 82.9 |
February 6, 2020 Program |  |  |  |
Accelerated Share Repurchases [Line Items] |  |  |  |
Stock repurchase authorization |  |  |  | $ 750.0

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- Definition Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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