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Commitments and Contingencies (Litigation and Environmental - Narrative) (Details) R$ in Millions | 1 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2010 BRL (R$) | Jun. 30, 2025 USD ($) | Jun. 30, 2025 BRL (R$) site | Jun. 30, 2025 USD ($) site | Sep. 30, 2024 USD ($)
Alleged Anticompete Litigation |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Civil fines imposed | R$ 179.2 | $ 33,000,000.0 |  |  |
Provision for litigation |  | $ 0 |  |  |
Maximum of loss contingency range subject to interest |  |  | R$ 179.2 | $ 33,000,000.0 |
Environmental |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Approximate number of sites on which settlement has not been reached | site |  |  | 26 | 26 |
Accrual for environmental loss contingencies |  |  |  | $ 87,400,000 | $ 79,100,000
Accrual for environmental loss contingencies, maximum payout period |  |  | 30 years | 30 years |
Environmental | Minimum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Estimate of possible exposure from environmental loss contingencies |  |  |  | $ 87,000,000 |
Environmental | Maximum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Estimate of possible exposure from environmental loss contingencies |  |  |  | $ 100,000,000 |

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