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Supplemental Financial Information - Other Income (Expense), Net (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Equity Securities, FV-NI, Unrealized Gain (Loss) | $ (3) | $ (35) | $ 57
Deferred Compensation Investment Income (Expense) | 32 | (46) | 43
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (98) | (17) | (1)
Foreign Currency Transaction Gain (Loss), Realized | (36) | (28) | (13)
Losses on debt extinguishment | 0 | (24) | (178)
Embecta services agreement income, net | 59 | 33 | 0
Other | 0 | 1 | (6)
Other Nonoperating Income (Expense) | (46) | (117) | $ (99)
United States |  |  |
Pension Settlement Expense | $ 57 | $ 73 |

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