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Revenue (Tables)

6 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Ashland disaggregates its revenue by reportable segment and geographical region as Ashland believes these categories best depict how management reviews the financial performance of its operations. Ashland includes only U.S. and Canada in its North America designation and includes Europe, the Middle East and Africa in its Europe designation. See the following tables for details. See Note Q for additional information.

Sales by geography
		Three months ended								Six months ended
		March 31								March 31
(In millions)		2026				2025				2026				2025
Life Sciences
North America		$	32			$	30			$	59			$	53
Europe			68				69				117				119
Asia Pacific			53				53				99				99
Latin America & other			19				20				36				35
		$	172			$	172			$	311			$	306
		Three months ended								Six months ended
		March 31								March 31
(In millions)		2026				2025				2026				2025
Personal Care
North America		$	38			$	41			$	68			$	81
Europe			60				59				106				104
Asia Pacific			33				30				64				60
Latin America & other			19				16				35				34
		$	150			$	146			$	273			$	279
		Three months ended								Six months ended
		March 31								March 31
(In millions)		2026				2025				2026				2025
Specialty Additives
North America		$	43			$	46			$	79			$	86
Europe			47				48				79				82
Asia Pacific			36				33				64				67
Latin America & other			8				7				14				14
		$	134			$	134			$	236			$	249
		Three months ended								Six months ended
		March 31								March 31
(In millions)		2026				2025				2026				2025
Intermediates
North America		$	25			$	25			$	44			$	48
Europe			5				6				10				11
Asia Pacific			3				4				8				8
Latin America & other			2				2				4				4
		$	35			$	37			$	66			$	71

Summary of Percentage of Ashland's Total Consolidated Sales for Products

The following table summarizes the percentage of Ashland's total consolidated sales for these products:

		Three months ended								Six months ended
		March 31								March 31
(In millions)		2026				2025				2026				2025
Cellulosics			41	%			38	%			40	%			39	%
PVP			23	%			25	%			24	%			24	%
			64	%			63	%			64	%			63	%

X

- 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
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

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- Definition

Tabular disclosure of product information that are included in the discussion of the nature of an entity's operations.

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