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Goodwill (Tables)
9 Months Ended
Jun. 30, 2013
Goodwill Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
  30 SeptemberAcquisitions andCurrency30 June 
  2012AdjustmentsTranslation2013 
 Merchant Gases $ 1,138.6 $ 72.0 $ (46.7) $ 1,163.9  
 Tonnage Gases  14.7   -   (.5)   14.2  
 Electronics and Performance Materials  445.1   2.0   (10.1)   437.0  
  $ 1,598.4 $ 74.0 $ (57.3) $ 1,615.1