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Intangible Assets - Reconciliation of Goodwill by Business Segment (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | $ 24,621 | $ 23,886
Goodwill, Acquired During Period |  | 1,073
Goodwill, Purchase Accounting Adjustments | 13 | (1)
Goodwill, Foreign Currency Translation Gain (Loss) | 105 | (337)
Goodwill, Written off Related to Sale of Business Unit | (218) |
Goodwill, ending balance | 24,522 | 24,621
Medical |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 10,909 | 10,240
Goodwill, Acquired During Period |  | 814
Goodwill, Purchase Accounting Adjustments | 13 | 1
Goodwill, Foreign Currency Translation Gain (Loss) | 33 | (145)
Goodwill, Written off Related to Sale of Business Unit | 0 |
Goodwill, ending balance | 10,955 | 10,909
Life Sciences |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 888 | 836
Goodwill, Acquired During Period |  | 71
Goodwill, Purchase Accounting Adjustments | 0 | 0
Goodwill, Foreign Currency Translation Gain (Loss) | 9 | (20)
Goodwill, Written off Related to Sale of Business Unit | 0 |
Goodwill, ending balance | 897 | 888
Interventional |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 12,824 | 12,810
Goodwill, Acquired During Period |  | 188
Goodwill, Purchase Accounting Adjustments | 0 | (2)
Goodwill, Foreign Currency Translation Gain (Loss) | 64 | (171)
Goodwill, Written off Related to Sale of Business Unit | (218) |
Goodwill, ending balance | $ 12,670 | $ 12,824

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