Restructuring (Tables)

9 Months Ended

Jun. 30, 2013

Restructuring And Related Activities [Abstract]

Recorded Restructuring Activities

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

	Three months ended				Nine months ended
	June 30				June 30
	2013		2012		2013		2012
	(Dollars in millions)				(Dollars in millions)
Cost of sales	$	3	$	2	$	24	$	13
Selling and administrative expenses		1		—		4		1
Research and technical expenses		1		—		2		—
Total	$	5	$	2	$	30	$	14

Restructuring Activities and Related Reserves

Details of these restructuring activities and the related reserves during the three months ended June 30, 2013 are as follows:

	Severance and Employee Benefits			Environmental Remediation		Asset Impairment and Accelerated Depreciation			Other		Total
	(Dollars in millions)
Reserve at March 31, 2013	$	4		$	2	$	—		$	1	$	7
Charges		3			—		1			1		5
Costs charged against assets/liabilities		—			—		(1	)		—		(1	)
Cash paid		(2	)		—		—			—		(2	)
Reserve at June 30, 2013	$	5		$	2	$	—		$	2	$	9

Details of these restructuring activities and the related reserves during the nine months ended June 30, 2013 are as follows:

	Severance and Employee Benefits			Environmental Remediation		Asset Impairment and Accelerated Depreciation			Other			Total
	(Dollars in millions)
Reserve at September 30, 2012	$	2		$	1	$	—		$	2		$	5
Charges		9			1		18			2			30
Costs charged against assets / liabilities		(1	)		—		(18	)		(1	)		(20	)
Cash paid		(5	)		—		—			(1	)		(6	)
Reserve at June 30, 2013	$	5		$	2	$	—		$	2		$	9