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Financial Information by Segment (Schedule of Income (Loss) Before Taxes for Unallocated and Other) (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Segment Reporting Information [Line Items]        
Restructuring charges $ 5 $ 2 $ 30 $ 14
Certain Items [Member]
       
Segment Reporting Information [Line Items]        
Acquisition related charges 2 5 18 5
Restructuring charges 5 2 30 14
Environmental reserves and legal settlements       2
Foreign currency exchange rate, re measurement income (loss) 4   3  
One-time integration costs 2   7  
Acquisition of accounting adjustments for acquired inventory     $ 11