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LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term debt | $ 8,924 | $ 7,687
Less: Current maturities | 605 | 532
Long-term debt | 8,319 | 7,155
Notes Payable | 3.15% notes due June 2025 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 0 | 500
Notes interest rate, percentage | 3.15% |
Notes Payable | 1.25% euro notes due October 2025 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 587 | 557
Notes interest rate, percentage | 1.25% |
Notes Payable | 0.875% notes due October 2026 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 750 | 750
Notes interest rate, percentage | 0.875% |
Notes Payable | 1.80% notes due October 2027 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 500 | 500
Notes interest rate, percentage | 1.80% |
Notes Payable | 2.00% notes due December 2028 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 1,000 | 1,000
Notes interest rate, percentage | 2.00% |
Notes Payable | 2.00% euro notes due October 2029 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 587 | 557
Notes interest rate, percentage | 2.00% |
Notes Payable | 1.95% notes due October 2030 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 500 | 500
Notes interest rate, percentage | 1.95% |
Notes Payable | 3.00% euro notes due March 2031 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 587 | 0
Notes interest rate, percentage | 3.00% |
Notes Payable | 2.20% notes due December 2031 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 1,000 | 1,000
Notes interest rate, percentage | 2.20% |
Notes Payable | 6.00% notes due August 2032 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 250 | 250
Notes interest rate, percentage | 6.00% |
Notes Payable | 5.00% notes due March 2035 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 500 | 0
Notes interest rate, percentage | 5.00% |
Notes Payable | 3.50% euro notes due March 2037 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 587 | 0
Notes interest rate, percentage | 3.50% |
Notes Payable | 6.125% notes due April 2039 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 250 | 250
Notes interest rate, percentage | 6.125% |
Notes Payable | 5.25% notes due November 2039 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 300 | 300
Notes interest rate, percentage | 5.25% |
Notes Payable | 2.75% notes due October 2050 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 500 | 500
Notes interest rate, percentage | 2.75% |
Notes Payable | 2.80% notes due December 2051 |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 1,000 | 1,000
Notes interest rate, percentage | 2.80% |
Notes Payable | Other |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 26 | $ 23

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