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v3.25.3

LONG-TERM DEBT- Narrative (Details) € in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2025 EUR (€) | Sep. 30, 2019 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, maturing in 2026 | $ 757 |  |  |  |  |
Long-term debt, maturing in 2027 | 528 |  |  |  |  |
Long-term debt, maturing in 2028 | 997 |  |  |  |  |
Long-term debt, maturing in 2029 | 584 |  |  |  |  |
Interest paid on long-term debt | 221 | $ 193 | $ 200 |  |  |
Repayments of long-term debt | 503 | 547 | $ 741 |  |  |
Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face amount | € |  |  |  |  |  | € 1,500
3.15% notes due June 2025 | Notes Payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of long-term debt | $ 500 |  |  |  |  |
Notes interest rate, percentage | 3.15% |  |  |  |  |
Three Point Zero Percentage Due Two Thousand Thirty One | Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notes interest rate, percentage |  |  |  | 3.00% | 3.00% |
Debt, face amount | € |  |  |  |  | € 500 |
Five Point Zero Percentage Due Two Thousand Thirty Five | Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notes interest rate, percentage |  |  |  | 5.00% | 5.00% |
Debt, face amount |  |  |  | $ 500 |  |
Three Point Five Percentage Due Two Thousand Thirty Siven | Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notes interest rate, percentage |  |  |  | 3.50% | 3.50% |
Debt, face amount | € |  |  |  |  | € 500 |
0.375% euro notes due May 2024 | Notes Payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of long-term debt |  | $ 529 |  |  |  |
Notes interest rate, percentage |  | 0.375% |  |  |  |

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