Subsequent Events	9 Months Ended
Jun. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	NOTE R – SUBSEQUENT EVENTS On July 22, 2022, Ashland LLC and Ashland Services B.V., subsidiaries of Ashland, entered into an amended and restated credit agreement (the 2022 Credit Agreement) with a group of lenders, amending and restating the 2020 Credit Agreement. The 2022 Credit Agreement provides for a $600 million unsecured five-year revolving credit facility (the 2022 Revolving Credit Facility) replacing the 2020 Revolving Credit Facility. After the closing date, proceeds of borrowings under the 2022 Revolving Credit Facility will be used, among other things, to provide ongoing working capital and for other general corporate purposes.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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