Restructuring (Tables)

6 Months Ended

Mar. 31, 2024

Restructuring and Related Activities [Abstract]

Recorded Restructuring Activities

Cabot’s restructuring activities were recorded in the Consolidated Statements of Operations for the three and six months ended March 31, 2024 and 2023 as follows:

	Three Months Ended March 31				Six Months Ended March 31
	2024		2023		2024		2023
	(In millions)
Cost of sales	$	2	$	—	$	11	$	—
Selling and administrative expenses		1		—		1		—
Total	$	3	$	—	$	12	$	—

Restructuring Activities and Related Reserves

Details of all restructuring activities and the related reserves during the three and six months ended March 31, 2024 are as follows:

	Severance and Employee Benefits			Accelerated Depreciation on Assets			Other		Total
	(In millions)
Reserve at September 30, 2023	$	—		$	—		$	—	$	—
Charges		3			6			—		9
Cost charged against assets		—			(6	)		—		(6	)
Cash paid		(1	)		—			—		(1	)
Reserve at December 31, 2023	$	2		$	—		$	—	$	2
Charges		2			—			1		3
Cash paid		(1	)		—			—		(1	)
Reserve at March 31, 2024	$	3		$	—		$	1	$	4