Debt and Financing Arrangements - Summary (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Sep. 30, 2025 |
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| Short-Term Debt [Line Items] | ||
| Short-term debt | $ 865 | $ 723 |
| Weighted average interest rate on short-term debt outstanding | 3.50% | 4.50% |
| Commercial paper | ||
| Short-Term Debt [Line Items] | ||
| Short-term debt | $ 200 | $ 400 |
| Term loans | ||
| Short-Term Debt [Line Items] | ||
| Short-term debt | 665 | 320 |
| Bank borrowings | ||
| Short-Term Debt [Line Items] | ||
| Short-term debt | $ 0 | $ 3 |
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- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 Weighted average interest rate of short-term debt outstanding calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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