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v3.25.3

Acquisitions and Dispositions - Dispositions (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2024 service_center_store | Sep. 30, 2024 USD ($) service_center_store | Dec. 31, 2024 service_center_store | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Gain (loss) on disposition of business |  |  |  | $ 71.1 | $ 41.8 | $ 0.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of service center stores sold | service_center_store | 39 | 28 | 67 |  |  |
Gain (loss) on disposition of business |  |  |  | 73.9 | 41.8 |
Discontinued Operations, Held-for-sale |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Gain (loss) on disposal of discontinued operations |  |  |  | $ 0.0 | 0.0 | 1,571.6
Discontinued Operations, Held-for-sale | Former Global Products Business |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Gain (loss) on disposal of discontinued operations |  |  |  |  |  | $ (8.1)
Current liabilities held for sale |  | $ 3.9 |  |  | $ 3.9 |

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