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Leases (Tables) | 9 Months Ended
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Jun. 30, 2025
Leases [Abstract] |
Supplemental Balance Sheet Information, Leases | The following table presents supplemental consolidated statement of financial position information (in millions):
| Location of lease balances |  | June 30, 2025 |  | September 30, 2024
Operating lease right-of-use assets | Other noncurrent assets |  | $ | 1,319 |  | $ | 1,170 |
Operating lease liabilities - current | Other current liabilities |  | 284 |  | 289 |
Operating lease liabilities - noncurrent | Other noncurrent liabilities |  | 1,068 |  | 921 |
Lease, Cost | The following table presents supplemental noncash operating lease activity (in millions):
|  |  |  | Nine Months Ended June 30, |  |
|  |  |  |  |  | 2025 |  | 2024 |  |
Right-of-use assets obtained in exchange for operating lease liabilities |  |  |  |  |  | $ | 421 |  |  | $ | 232 |  |  |

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- Definition Supplemental Balance Sheet Information Leases [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- References No definition available. + Details
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