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Revenues (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Sep. 30, 2023
--- | --- | ---
Disaggregation of Revenue [Line Items] |  |
Rebate liability | $ 593 | $ 538
Contract with Customer, Liability | $ 440 | $ 412
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01 |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, expected timing of satisfaction (in years) | 3 years |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01 | Products and/or Services |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, amount | $ 2,300 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01 | Consumables |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, amount | $ 2,100 |

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