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Note 11 - Financial Derivatives (Detail) - Income Statement Location and Fair Value (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Non-designated Hedges      
Foreign currency contracts: Other income (expense) $ 0.5 $ 2.6 $ (1.5)
Designated Hedges      
Foreign currency contracts: Other income (expense)     0.2
Interest rate swap - ineffectiveness: Other income (expense) 1.5 (2.9) 0.4
Interest rate swap - effectiveness: Interest expense $ 24.5 $ 22.1 $ 12.4