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v3.23.3

Financial Information by Segment & Geographic Area - Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 3,931 | $ 4,321 | $ 3,409
Depreciation and amortization | 144 | 146 | 160
Income (Loss) from Equity Method Investments | 5 | 10 | 3
Income (loss) from operations before income taxes | 451 | 335 | 406
Assets | 3,604 | 3,525 | 3,306
Total expenditures for additions to long-lived assets | 265 | 221 | 198
Operating Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 3,788 | 4,158 | 3,251
Depreciation and amortization | 142 | 145 | 159
Income (Loss) from Equity Method Investments | 5 | 10 | 4
Income (loss) from operations before income taxes | 607 | 642 | 550
Assets | 3,105 | 3,149 | 3,029
Total expenditures for additions to long-lived assets | 257 | 217 | 193
Unallocated and Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 143 | 163 | 158
Depreciation and amortization | 2 | 1 | 1
Income (Loss) from Equity Method Investments |  |  | (1)
Income (loss) from operations before income taxes | (156) | (307) | (144)
Assets | 499 | 376 | 277
Total expenditures for additions to long-lived assets | 8 | 4 | 5
Reinforcement Materials [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues |  | 98 | 57
Reinforcement Materials [Member] | Operating Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 2,563 | 2,673 | 1,838
Depreciation and amortization | 70 | 70 | 70
Income (Loss) from Equity Method Investments | 2 | 4 |
Income (loss) from operations before income taxes | 482 | 408 | 329
Assets | 1,632 | 1,691 | 1,421
Total expenditures for additions to long-lived assets | 149 | 114 | 104
Performance Chemicals [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues |  | 16 | 8
Performance Chemicals [Member] | Operating Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,225 | 1,388 | 1,156
Depreciation and amortization | 72 | 72 | 73
Income (Loss) from Equity Method Investments | 3 | 5 | 2
Income (loss) from operations before income taxes | 125 | 234 | 211
Assets | 1,473 | 1,458 | 1,325
Total expenditures for additions to long-lived assets | $ 108 | 100 | 80
Purification Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues |  | 97 | 257
Purification Solutions [Member] | Operating Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues |  | 97 | 257
Depreciation and amortization |  | 3 | 16
Income (Loss) from Equity Method Investments |  | 1 | 2
Income (loss) from operations before income taxes |  |  | 10
Assets |  |  | 283
Total expenditures for additions to long-lived assets |  | $ 3 | $ 9

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