Restructuring (Tables)

9 Months Ended

Jun. 30, 2018

Restructuring And Related Activities [Abstract]

Recorded Restructuring Activities

Cabot’s restructuring activities were recorded in the Consolidated Statements of Operations in the three and nine months ended June 30, 2018 and 2017 as follows:

	Three Months Ended June 30				Nine Months Ended June 30
	2018		2017		2018			2017
	(In millions)
Cost of sales	$	1	$	1	$	(8	)	$	2
Selling and administrative expenses		—		—		1			1
Total	$	1	$	1	$	(7	)	$	3

Restructuring Activities and Related Reserves

Details of all restructuring activities and the related reserves during the three and nine months ended June 30, 2018 were as follows:

	Severance and Employee Benefits			Environmental Remediation			Asset Sales			Asset Impairment and Accelerated Depreciation			Other			Total
	(In millions)
Reserve at September 30, 2017	$	1		$	2		$	—		$	—		$	—		$	3
Charges		—			—			—			—			1			1
Accrual for deposit on sale of land		—			—			(4	)		—			—			(4	)
Cash received (paid)		—			—			4			—			(1	)		3
Reserve at December 31, 2017	$	1		$	2		$	—		$	—		$	—		$	3
Charges (gain)		1			—			(11	)		1			—			(9	)
Costs charged against assets / (liabilities)		—			—			2			(1	)		—			1
Cash (paid) received		(1	)		—			9			—			—			8
Reserve at March 31, 2018	$	1		$	2		$	—		$	—		$	—		$	3
Charges (gain)		—			1			—			—			—			1
Accrual for deposit on sale of land rights		—			—			(3	)		—			—			(3	)
Cash (paid) received		(1	)		(1	)		3			—			—			1
Reserve at June 30, 2018	$	—		$	2		$	—		$	—		$	—		$	2