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v3.22.2.2

Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Millions | Sep. 30, 2022 | Sep. 30, 2021 | Mar. 31, 2021
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Long-Term Debt | $ 13,886 | $ 17,110 |
1.000% Notes due December 15, 2022 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 1.00% |  |
Long-Term Debt | $ 0 | 579 |
1.401% Notes due May 24, 2023 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 1.401% |  |
Long-Term Debt | $ 0 | 347 |
0.632% Notes due June 4, 2023 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 0.632% |  |
Long-Term Debt | $ 0 | $ 926 |
0.000% Notes due August 13, 2023 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 0.00% | 0.00% |
Long-Term Debt | $ 0 | $ 463 |
3.875% Notes due May 15, 2024 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.875% | 3.875% |
Long-Term Debt | $ 145 | $ 146 |
3.363% Notes due June 6, 2024 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.363% | 3.363% |
Long-Term Debt | $ 996 | $ 994 |
3.734% Notes due December 15, 2024 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.734% | 3.734% |
Long-Term Debt | $ 873 | $ 873 |
3.020% Notes due May 24, 2025 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.02% |  |
Long-Term Debt | $ 275 | $ 336 |
0.034% Notes due August 13, 2025 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 0.034% | 0.034% |
Long-Term Debt | $ 485 | $ 577 |
1.208% Notes due June 4, 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 1.208% |  |
Long-Term Debt | $ 583 | 693 |
6.700% Notes due December 1, 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 6.70% |  |
Long-Term Debt | $ 165 | 168 |
1.900% Notes due December 15, 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 1.90% |  |
Long-Term Debt | $ 485 | 577 |
3.700% Notes due June 6, 2027 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.70% |  |
Long-Term Debt | $ 1,718 | 1,716 |
7.000% Debentures due August 1, 2027 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 7.00% |  |
Long-Term Debt | $ 119 | 174 |
6.700% Debentures due August 1, 2028 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 6.70% |  |
Long-Term Debt | $ 116 | $ 173 |
0.334% Notes due August 13, 2028 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 0.334% | 0.334% |
Long-Term Debt | $ 872 | $ 1,037 |
2.823% Notes due May 20, 2030 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 2.823% |  |
Long-Term Debt | $ 745 | 744 |
1.957% Notes due February 11, 2031 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 1.957% |  | 1.957%
Long-Term Debt | $ 992 | 992 |
4.298% Notes due August 22, 2032 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 4.298% |  |
Long-Term Debt | $ 495 | 0 |
1.213% Notes due February 12, 2036 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate |  |  | 1.213%
Long-Term Debt | $ 580 | 690 |
6.000% Notes due May 15, 2039 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 6.00% |  |
Long-Term Debt | $ 121 | 246 |
5.000% Notes due November 12, 2040 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 5.00% |  |
Long-Term Debt | $ 90 | $ 124 |
1.336% Notes due August 13, 2041 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 1.336% | 1.336% |
Long-Term Debt | $ 869 | $ 1,034 |
4.875% Notes due May 15, 2044 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 4.875% |  |
Long-Term Debt | $ 246 | 246 |
4.685% Notes due December 15, 2044 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 4.685% |  |
Long-Term Debt | $ 911 | 1,033 |
4.669% Notes due June 6, 2047 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 4.669% |  |
Long-Term Debt | $ 1,449 | 1,481 |
3.794% Notes due May 20, 2050 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 3.794% |  |
Long-Term Debt | $ 554 | $ 742 |

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