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v3.25.2

Debt (Details) - USD ($) $ in Millions | Jun. 30, 2025 | May 31, 2025 | Sep. 30, 2024
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Unamortized discounts and debt issuance costs | $ (188) |  | $ (142)
Hedge accounting fair value adjustments | (65) |  | (133)
Total carrying value of debt | 25,138 |  | 20,836
Current maturities of debt | 5,548 |  | 0
Long-term debt | 19,590 |  | 20,836
Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Senior notes | $ 25,391 |  | 21,111
Senior Notes | 3.15% Senior Notes due December 2025 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 3.15% |  |
Senior notes | $ 4,000 |  | 4,000
Effective interest rate (percent) | 3.26% |  |
Senior Notes | 1.90% Senior Notes due April 2027 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 1.90% |  |
Senior notes | $ 1,500 |  | 1,500
Effective interest rate (percent) | 2.02% |  |
Senior Notes | 0.75% Senior Notes due August 2027 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 0.75% |  |
Senior notes | $ 500 |  | 500
Effective interest rate (percent) | 0.84% |  |
Senior Notes | 2.75% Senior Notes due September 2027 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 2.75% |  |
Senior notes | $ 750 |  | 750
Effective interest rate (percent) | 2.91% |  |
Senior Notes | 2.05% Senior Notes due April 2030 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 2.05% |  |
Senior notes | $ 1,500 |  | 1,500
Effective interest rate (percent) | 2.13% |  |
Senior Notes | 1.10% Senior Notes due February 2031 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 1.10% |  |
Senior notes | $ 1,000 |  | 1,000
Effective interest rate (percent) | 1.20% |  |
Senior Notes | 4.15% Senior Notes due December 2035 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 4.15% |  |
Senior notes | $ 1,500 |  | 1,500
Effective interest rate (percent) | 4.23% |  |
Senior Notes | 2.70% Senior Notes due April 2040 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 2.70% |  |
Senior notes | $ 1,000 |  | 1,000
Effective interest rate (percent) | 2.80% |  |
Senior Notes | 4.30% Senior Notes due December 2045 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 4.30% |  |
Senior notes | $ 3,500 |  | 3,500
Effective interest rate (percent) | 4.37% |  |
Senior Notes | 3.65% Senior Notes due September 2047 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 3.65% |  |
Senior notes | $ 750 |  | 750
Effective interest rate (percent) | 3.73% |  |
Senior Notes | 2.00% Senior Notes due August 2050 | U.S. |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 2.00% |  |
Senior notes | $ 1,750 |  | 1,750
Effective interest rate (percent) | 2.09% |  |
Senior Notes | 1.50% Senior Notes due June 2026 | Europe |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 1.50% |  |
Senior notes | $ 1,587 |  | 1,513
Effective interest rate (percent) | 1.71% |  |
Senior Notes | 2.25% Senior Notes due May 2028 | Europe |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 2.25% | 2.25% |
Senior notes | $ 1,469 |  | 0
Effective interest rate (percent) | 2.57% |  |
Senior Notes | 2.00% Senior Notes due June 2029 | Europe |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 2.00% |  |
Senior notes | $ 1,176 |  | 1,120
Effective interest rate (percent) | 2.13% |  |
Senior Notes | 3.125% Senior Notes due May 2033 | Europe |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 3.125% | 3.125% |
Senior notes | $ 1,176 |  | 0
Effective interest rate (percent) | 3.20% |  |
Senior Notes | 2.375% Senior Notes due June 2034 | Europe |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 2.375% |  |
Senior notes | $ 764 |  | 728
Effective interest rate (percent) | 2.53% |  |
Senior Notes | 3.50% Senior Notes due May 2037 | Europe |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 3.50% | 3.50% |
Senior notes | $ 764 |  | 0
Effective interest rate (percent) | 3.62% |  |
Senior Notes | 3.875% Senior Notes due May 2044 | Europe |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate (percent) | 3.875% | 3.875% |
Senior notes | $ 705 |  | $ 0
Effective interest rate (percent) | 4.02% |  |

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