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Revenue (Tables) | 3 Months Ended
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Dec. 31, 2019
Revenue From Contract With Customer [Abstract] |
Disaggregation of Revenue | Ashland disaggregates its revenue from contracts with customers by segment, geographical region and product category, as Ashland believes these categories best depict how management reviews the financial performance of its operations. See the following tables for details:
Sales by geography for the three months ended December 31 |
(In millions) |  | Specialty Ingredients |  |  | Intermediates and Solvents |
Geography |  | 2019 |  |  |  | 2018 |  |  | 2019 |  |  | 2018 |
North America |  | $ | 198 |  |  | $ | 219 |  |  | $ | 15 |  |  | $ | 11 |
Europe |  |  | 161 |  |  |  | 170 |  |  |  | 5 |  |  |  | 5 |
Asia Pacific |  |  | 103 |  |  |  | 116 |  |  |  | 7 |  |  |  | 6 |
Latin America & other |  |  | 43 |  |  |  | 48 |  |  |  | 1 |  |  |  | 1 |
|  | $ | 505 |  |  | $ | 553 |  |  | $ | 28 |  |  | $ | 23 |
Sales by product category for the three months ended December 31 |
(In millions) |  | 2019 |  |  | 2018 |
Specialty Ingredients |
Cellulosics |  | $ | 178 |  |  | $ | 189 |
Poly-vinyl pyrrolidones |  |  | 93 |  |  |  | 95 |
Adhesives |  |  | 74 |  |  |  | 82 |
Actives |  |  | 37 |  |  |  | 37 |
Vinyl ethers |  |  | 20 |  |  |  | 24 |
Pharmachem |  |  | 40 |  |  |  | 59 |
Other (a) |  |  | 63 |  |  |  | 67 |
|  | $ | 505 |  |  | $ | 553 |
Intermediates and Solvents |
Derivatives |  | $ | 23 |  |  | $ | 20 |
Butanediol |  |  | 5 |  |  |  | 3 |
|  | $ | 28 |  |  | $ | 23 |
| (a) | Other includes no product category in excess of 10% of sales. |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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