Restructuring (Tables)

12 Months Ended

Sep. 30, 2014

Restructuring and Related Activities [Abstract]

Recorded Restructuring Activities

Cabot’s restructuring activities were recorded in the Consolidated Statements of Operations as follows:

	Years Ended September 30
	2014		2013		2012
	(Dollars in millions)
Cost of sales	$	12	$	28	$	13
Selling and administrative expenses		17		7		2
Research and technical expenses		—		—		—
Total	$	29	$	35	$	15

Restructuring Activities and Related Reserves

Details of these restructuring activities and the related reserves for fiscal 2014 and 2013 were as follows:

	Severance and Employee Benefits			Environmental Remediation			Asset Impairment and Accelerated Depreciation			Asset Sales			Other			Total
	(Dollars in millions)
Reserve at September 30, 2012	$	2		$	1		$	—		$	—		$	2		$	5
Charges		11			1			19			—			4			35
Costs charged against assets and other		—			—			(19	)		—			(2	)		(21	)
Cash paid		(6	)		—			—			—			(3	)		(9	)
Foreign currency translation adjustment		—			—			—			—			—			—
Reserve at September 30, 2013	$	7		$	2		$	—		$	—		$	1		$	10
Charges		18			1			4			1			5			29
Costs charged against assets and other		—			—			(4	)		—			—			(4	)
Cash paid		(8	)		(1	)		—			(1	)		(5	)		(15	)
Foreign currency translation adjustment		(1	)		—			—			—			—			(1	)
Reserve at September 30, 2014	$	16		$	2		$	—		$	—		$	1		$	19