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Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents (Tables) | 6 Months Ended
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Mar. 31, 2026
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] |
Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | The Company reconciles cash, cash equivalents, restricted cash and restricted cash equivalents reported on the consolidated balance sheets that aggregate to the beginning and ending balances shown in the consolidated statements of cash flows as follows:
| March 31, 2026 |  | September 30, 2025
| (in millions)
Cash and cash equivalents | $ | 12,404 |  |  | $ | 17,164 |
Restricted cash and restricted cash equivalents: |  |  |
U.S. litigation escrow | 665 |  |  | 2,990 |
Customer collateral | 4,292 |  |  | 3,625 |
Prepaid expenses and other current assets | 1,345 |  |  | 1,208 |
Cash, cash equivalents, restricted cash and restricted cash equivalents | $ | 18,706 |  |  | $ | 24,987 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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