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v3.25.3

Commitments and Contingencies (Details) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 27, 2024 fatality incident | Sep. 30, 2025 USD ($) $ / Mcf MMcf | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Dec. 02, 2024 fatality
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Purchases under contract | $ |  | $ 153.4 | $ 105.7 | $ 182.0 |
Supply Commitment |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Contract term |  | 1 year |  |  |
Purchase commitment volume |  | 21,000.0 |  |  |
Supply Commitment | Weighted Average |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Fixed price contracts (USD per Mcf) | $ / Mcf |  | 2.70 |  |  |
Supply Commitment | Short-term Contract with Customer |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Contract term |  | 1 year |  |  |
Purchase commitment volume |  | 73,400 |  |  |
Supply Commitment | Long-term Contract with Customer Within Two To Three Years |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Purchase commitment volume |  | 114,900 |  |  |
Supply Commitment | Long-term Contract with Customer Within Two To Three Years | Minimum |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Contract term |  | 2 years |  |  |
Supply Commitment | Long-term Contract with Customer Within Two To Three Years | Maximum |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Contract term |  | 3 years |  |  |
National Transportation Safety Board |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Number of fatalities under investigation | fatality | 1 |  |  |  | 1
Jackson, Mississippi | National Transportation Safety Board |  |  |  |  |
Long Term Purchase Commitment [Line Items] |  |  |  |  |
Number of incidents investigated that occurred during period | incident | 2 |  |  |  |

X
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- Definition Purchases made during the period under arrangements in which the entity has agreed to expend funds to procure goods or services from one or more suppliers. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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