Acquisitions	3 Months Ended
Dec. 31, 2021
Business Combinations [Abstract]
Acquisitions	C. Acquisitions Tokai Carbon (Tianjin) Co. In November 2021, Cabot entered into an agreement with Tokai Carbon Group to purchase its carbon black manufacturing facility in Tianjin, China, Tokai Carbon (Tianjin) Co., for approximately $9 million, which is subject to the satisfaction or waiver of customary closing adjustments. The purchase is expected to close in the second quarter of fiscal 2022.

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-URI http://asc.fasb.org/topic&trid=2303972

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