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v3.25.2

Commitments and Contingencies (Pace, Piedmont and Pasadena - Narrative) (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2012 USD ($) surfaceImpoundmentUnit | Sep. 30, 2008 USD ($) | Sep. 30, 2006 USD ($)
Environmental |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Accrual for environmental loss contingencies | $ 87.4 | $ 79.1 |  |  |  |
Accrual for environmental loss contingencies, maximum payout period | 30 years |  |  |  |  |
Pace, Florida |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Accrual for environmental loss contingencies | $ 54.4 |  |  |  |  | $ 42.0
Change in estimated exposure |  | 19.0 | $ 19.0 |  |  |
Pace, Florida | Environmental |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Site Contingency, Cost Review, Period | 5 years |  |  |  |  |
Accrual for environmental loss contingencies, maximum payout period | 30 years |  |  |  |  |
Pace, Florida | Discontinued operations |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Pretax environmental expense |  | $ 19.0 | $ 19.0 |  |  | $ 42.0
Piedmont, South Carolina |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Accrual for environmental loss contingencies | $ 10.5 |  |  |  | $ 24.0 |
Change in estimated exposure | 9.0 |  |  |  |  |
Piedmont, South Carolina | Discontinued operations |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Pretax environmental expense | 9.0 |  |  |  | $ 24.0 |
Pasadena, Texas |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Accrual for environmental loss contingencies | $ 10.0 |  |  |  |  |
Number of closed facilities | surfaceImpoundmentUnit |  |  |  | 2 |  |
Total anticipated exposure |  |  |  | $ 13.0 |  |

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