Restructuring (Tables)

6 Months Ended

Mar. 31, 2020

Restructuring And Related Activities [Abstract]

Recorded Restructuring Activities

Cabot’s restructuring activities were recorded in the Consolidated Statements of Operations in the three and six months ended March 31, 2020 and 2019 as follows:

	Three Months Ended March 31				Six Months Ended March 31
	2020		2019		2020		2019
	(In millions)
Cost of sales	$	4	$	2	$	5	$	5
Selling and administrative expenses		1		—		8		6
Total	$	5	$	2	$	13	$	11

Restructuring Activities and Related Reserves

Details of all restructuring activities and the related reserves during the three and six months ended March 31, 2020 were as follows:

	Severance and Employee Benefits			Environmental Remediation		Accelerated Depreciation and Idle Asset Depreciation			Other			Total
	(In millions)
Reserve at September 30, 2019	$	3		$	4	$	—		$	—		$	7
Charges (gain)		7			—		—			1			8
Cash paid		(2	)		—		—			(1	)		(3	)
Reserve at December 31, 2019		8			4		—			—			12
Charges (gain)		3			—		1			1			5
Costs charged against assets / (liabilities)		—			—		(1	)		—			(1	)
Cash paid		(5	)		—		—			(1	)		(6	)
Reserve at March 31, 2020	$	6		$	4	$	—		$	—		$	10