Acquisition - Recognized Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions |
9 Months Ended | ||
|---|---|---|---|
Apr. 30, 2026 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Business Acquisition [Line Items] | |||
| Payments to acquire businesses, net of cash acquired | $ 205.7 | $ 0.0 | |
| Spire Marketing, Inc. | Boardwalk Pipelines, LP | |||
| Business Acquisition [Line Items] | |||
| Trade receivables | $ 75.0 | ||
| Derivative assets - current | 73.5 | ||
| Other current assets | 21.4 | ||
| Goodwill | 126.9 | ||
| Other | 2.2 | ||
| Total assets acquired | 299.0 | ||
| Trade payables and other current liabilities | 86.5 | ||
| Other | 6.8 | ||
| Total liabilities assumed | 93.3 | ||
| Net assets acquired | 205.7 | ||
| Purchase price | 205.8 | ||
| Less: Cash acquired | 0.1 | ||
| Payments to acquire businesses, net of cash acquired | $ 205.7 | $ 205.7 | |
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of asset acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of receivable acquired in business combination and recognized at acquisition date, classified as current. Includes, but is not limited to, receivable from customer for product and service. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of accounts payable assumed in business combination and recognized at acquisition date, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of liability assumed in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of liability assumed in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset acquired in excess of (less than) liability assumed plus goodwill in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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