Financial Information by Segment & Geographic Area - Schedule of Income (Loss) Before Taxes for Unallocated and Other (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Restructuring charges	$ 37	$ 15	$ 18
Benefit from a legal judgment			3
Certain Items [Member]
Segment Reporting Information [Line Items]
Acquisition related charges	37	26
Restructuring charges	21	17
Environmental reserves and legal settlements		14
Foreign currency exchange rate, re measurement income (loss)	3
Reserve for environmental matters	1
One-time integration costs	10	3
Acquisition of accounting adjustments for acquired inventory	11	9
Certain Items [Member] | 2009 Global Restructuring Plan [Member]
Segment Reporting Information [Line Items]
Environmental reserves and legal settlements		4
Reserve for respirator claim		4
Colombia [Member]
Segment Reporting Information [Line Items]
Charge related to change in net worth tax regulations			$ 3