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v3.25.1

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | $ 479 | $ 575 | $ 884 | $ 1,048
Life Sciences [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 172 | 222 | 306 | 422
Life Sciences [Member] | North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 30 | 73 | 53 | 140
Life Sciences [Member] | Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 69 | 72 | 119 | 136
Life Sciences [Member] | Asia Pacific [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 53 | 57 | 99 | 107
Life Sciences [Member] | Latin America & Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 20 | 20 | 35 | 39
Personal Care [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 146 | 169 | 279 | 298
Personal Care [Member] | North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 41 | 45 | 81 | 85
Personal Care [Member] | Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 59 | 69 | 104 | 116
Personal Care [Member] | Asia Pacific [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 30 | 31 | 60 | 57
Personal Care [Member] | Latin America & Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 16 | 24 | 34 | 40
Specialty Additives [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 134 | 157 | 249 | 279
Specialty Additives [Member] | North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 46 | 46 | 86 | 88
Specialty Additives [Member] | Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 48 | 63 | 82 | 103
Specialty Additives [Member] | Asia Pacific [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 33 | 40 | 67 | 74
Specialty Additives [Member] | Latin America & Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 7 | 8 | 14 | 14
Intermediates [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 37 | 40 | 71 | 73
Intermediates [Member] | North America [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 25 | 27 | 48 | 52
Intermediates [Member] | Europe [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 6 | 6 | 11 | 10
Intermediates [Member] | Asia Pacific [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | 4 | 6 | 8 | 9
Intermediates [Member] | Latin America & Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Sales | $ 2 | $ 1 | $ 4 | $ 2

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