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Venezuela (Narrative) (Detail)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended 9 Months Ended
Jun. 30, 2013
USD ($)
Jun. 30, 2013
USD ($)
Jun. 30, 2013
VEF
Jun. 30, 2012
USD ($)
Jun. 30, 2012
VEF
Feb. 28, 2013
Devaluation of the Bolivar [Member]
Minimum [Member]
VEF
Feb. 28, 2013
Devaluation of the Bolivar [Member]
Maximum [Member]
VEF
Jun. 30, 2013
Operating Affiliate, Venezuela [Member]
Jun. 30, 2013
Operating Affiliate [Member]
USD ($)
Nature Of Operations [Line Items]                  
Equity method investment, ownership percentage               49.00%  
Operating affiliate investment $ 26 $ 26              
Due from affiliates, dividends cash   3 20            
Devaluation of bolivar to USD           4.3 6.3    
Currency devaluation, remeasurement loss 2               1
Tax impact on devaluation 2               1
Equity in earnings of affiliated companies                 1
Cash dividends received   $ (2) 12 $ (4) 16