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v3.23.3

Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Millions | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-Term Debt | $ 14,738 | $ 13,886
3.875% Notes due May 15, 2024 |  |
Debt Instrument [Line Items] |  |
Long-Term Debt | $ 0 | 145
3.363% Notes due June 6, 2024 |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.363% |
Long-Term Debt | $ 0 | 996
3.734% Notes due December 15, 2024 |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.734% |
Long-Term Debt | $ 874 | 873
3.020% Notes due May 24, 2025 |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.02% |
Long-Term Debt | $ 306 | 275
0.034% Notes due August 13, 2025 |  |
Debt Instrument [Line Items] |  |
Interest rate | 0.034% |
Long-Term Debt | $ 528 | 485
1.208% Notes due June 4, 2026 |  |
Debt Instrument [Line Items] |  |
Interest rate | 1.208% |
Long-Term Debt | $ 634 | 583
6.700% Notes due December 1, 2026 |  |
Debt Instrument [Line Items] |  |
Interest rate | 6.70% |
Long-Term Debt | $ 161 | 165
1.900% Notes due December 15, 2026 |  |
Debt Instrument [Line Items] |  |
Interest rate | 1.90% |
Long-Term Debt | $ 528 | 485
3.700% Notes due June 6, 2027 |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.70% |
Long-Term Debt | $ 1,719 | 1,718
7.000% Debentures due August 1, 2027 |  |
Debt Instrument [Line Items] |  |
Interest rate | 7.00% |
Long-Term Debt | $ 119 | 119
4.693% Notes due February 13, 2028 |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.693% |
Long-Term Debt | $ 796 | 0
6.700% Debentures due August 1, 2028 |  |
Debt Instrument [Line Items] |  |
Interest rate | 6.70% |
Long-Term Debt | $ 115 | 116
0.334% Notes due August 13, 2028 |  |
Debt Instrument [Line Items] |  |
Interest rate | 0.334% |
Long-Term Debt | $ 949 | 872
3.553% Notes due September 13, 2029 |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.553% |
Long-Term Debt | $ 842 | 0
2.823% Notes due May 20, 2030 |  |
Debt Instrument [Line Items] |  |
Interest rate | 2.823% |
Long-Term Debt | $ 745 | 745
1.957% Notes due February 11, 2031 |  |
Debt Instrument [Line Items] |  |
Interest rate | 1.957% |
Long-Term Debt | $ 993 | 992
4.298% Notes due August 22, 2032 |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.298% |
Long-Term Debt | $ 496 | 495
1.213% Notes due February 12, 2036 |  |
Debt Instrument [Line Items] |  |
Interest rate | 1.213% |
Long-Term Debt | $ 631 | 580
6.000% Notes due May 15, 2039 |  |
Debt Instrument [Line Items] |  |
Interest rate | 6.00% |
Long-Term Debt | $ 121 | 121
5.000% Notes due November 12, 2040 |  |
Debt Instrument [Line Items] |  |
Interest rate | 5.00% |
Long-Term Debt | $ 90 | 90
1.336% Notes due August 13, 2041 |  |
Debt Instrument [Line Items] |  |
Interest rate | 1.336% |
Long-Term Debt | $ 945 | 869
4.875% Notes due May 15, 2044 |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.875% |
Long-Term Debt | $ 245 | 246
4.685% Notes due December 15, 2044 |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.685% |
Long-Term Debt | $ 899 | 911
4.669% Notes due June 6, 2047 |  |
Debt Instrument [Line Items] |  |
Interest rate | 4.669% |
Long-Term Debt | $ 1,445 | 1,449
3.794% Notes due May 20, 2050 |  |
Debt Instrument [Line Items] |  |
Interest rate | 3.794% |
Long-Term Debt | $ 554 | 554
Other long-term debt |  |
Debt Instrument [Line Items] |  |
Long-Term Debt | $ 2 | $ 0

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