Restructuring (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended				9 Months Ended			3 Months Ended	9 Months Ended			1 Months Ended	9 Months Ended		9 Months Ended	12 Months Ended		9 Months Ended		9 Months Ended					12 Months Ended	9 Months Ended					9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2013 Environmental Remediation [Member]	Mar. 31, 2013 Environmental Remediation [Member]	Sep. 30, 2012 Environmental Remediation [Member]	Jun. 30, 2013 Severance and Employee Benefits [Member]	Jun. 30, 2013 Severance and Employee Benefits [Member]	Mar. 31, 2013 Severance and Employee Benefits [Member]	Sep. 30, 2012 Severance and Employee Benefits [Member]	Mar. 31, 2012 Closure of Hong Kong [Member] Employees	Jun. 30, 2013 Closure of Hong Kong [Member]	Jun. 30, 2013 Closure of Hong Kong [Member] Maximum [Member]	Jun. 30, 2013 Closure Of Thane [Member]	Sep. 30, 2010 Closure Of Thane [Member] Employees	Jun. 30, 2013 Closure Of Thane [Member] Maximum [Member]	Jun. 30, 2013 Closure Of Thane [Member] Through March Two Thousand And Thirteen [Member]	Jun. 30, 2013 Closure Of Thane [Member] Through March Two Thousand And Thirteen [Member] Maximum [Member]	Jun. 30, 2013 Closure Of Thane [Member] Demolition And Site Clearing Costs [Member]	Jun. 30, 2013 Closure Of Thane [Member] Demolition And Site Clearing Costs [Member] Through March Two Thousand And Thirteen [Member]	Jun. 30, 2013 Closure Of Thane [Member] Other Post Closing Costs [Member]	Jun. 30, 2013 Closure Of Thane [Member] Other Post Closing Costs [Member] Through March Two Thousand And Thirteen [Member]	Jun. 30, 2013 2009 Global Restructuring Plan [Member] Employees	Sep. 30, 2009 2009 Global Restructuring Plan [Member] Facility	Jun. 30, 2013 2009 Global Restructuring Plan [Member] Demolition And Site Clearing Costs [Member]	Jun. 30, 2013 2009 Global Restructuring Plan [Member] Other Post Closing Costs [Member]	Jun. 30, 2013 Closure of Port Dickson [Member] Employees	Jun. 30, 2013 Closure of Port Dickson [Member] Environmental Remediation [Member]	Jun. 30, 2013 Closure of Port Dickson [Member] Severance and Employee Benefits [Member]	Jun. 30, 2013 Restructuring Activities Other [Member] Severance Costs [Member]	Jun. 30, 2012 Restructuring Activities Other [Member] Severance Costs [Member]	Jun. 30, 2013 Restructuring Activities Other [Member] Severance Costs [Member] Asset Write-offs [Member]	Jun. 30, 2013 Restructuring Activities Other [Member] Severance Costs [Member] Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Equity share in CMSB																														51.00%
Affected employees														64				120								400				90
Restructuring charges	$ 5	$ 2	$ 30	$ 14			$ 1			$ 3	$ 9				$ 7							$ 3	$ 3	$ 3	$ 3			$ 7	$ 17	$ 18
Restructuring accelerated depreciation and asset impairments																	12									45				16
Severance charges																	7			6						55				2			9	1
Portion of the charges that are allocable to the noncontrolling interest																														49.00%
Pre-tax charge to earnings															8		25									124				27			12
Site demolition, clearing and environmental remediation costs																														9
Expected cumulative net cash outlays related to plan															2											76				11	9	2
Expected cash outlays remainder fiscal year																1					1					4				1			3
Expected cash outlays beyond fiscal year																														10
Accrued severance	9		9		7	5	2	2	1	5	5	4	2			1			1							4				2			3
Cash payments	2		6							2	5				2					9						72							9
Proceeds from sale of assets																				3
Number of facilities closed																											3
Asset write-offs																																			2
Expected cash outlays beyond 2014 fiscal year																																				3
Additional charges during the remainder of fiscal 2013	3		3
Additional charges thereafter	$ 5		$ 5