Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions |
Dec. 31, 2023 |
Sep. 30, 2023 |
|---|---|---|
| Definite-lived intangible assets | ||
| Gross Carrying Amount | $ 5,584 | $ 5,511 |
| Accumulated Amortization | (2,882) | (2,737) |
| Net | 2,702 | 2,774 |
| Indefinite-lived intangible assets | ||
| Gross Carrying Amount | 7,717 | 7,625 |
| Net | 4,835 | 4,888 |
| Trademarks/trade names | ||
| Definite-lived intangible assets | ||
| Accumulated Amortization | 0 | 0 |
| Indefinite-lived intangible assets | ||
| Gross Carrying Amount | 2,133 | 2,114 |
| Technology | ||
| Definite-lived intangible assets | ||
| Gross Carrying Amount | 1,587 | 1,575 |
| Accumulated Amortization | (849) | (806) |
| Net | 738 | 769 |
| Customer relationships | ||
| Definite-lived intangible assets | ||
| Gross Carrying Amount | 3,076 | 3,047 |
| Accumulated Amortization | (1,571) | (1,496) |
| Net | 1,505 | 1,551 |
| Miscellaneous | ||
| Definite-lived intangible assets | ||
| Gross Carrying Amount | 921 | 889 |
| Accumulated Amortization | (462) | (435) |
| Net | $ 459 | $ 454 |