XML 36 R56.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
Jul. 31, 2013
Jul. 31, 2012
Debt Instrument [Line Items]    
Aggregate carrying amount of equity method investments $ 18.8 $ 20.1
Long-term Debt [Member]
   
Debt Instrument [Line Items]    
Fair value of debt 112.3  
Debt carrying amount 100.0  
Short-term Debt [Member]
   
Debt Instrument [Line Items]    
Fair value of debt 98.2  
Debt carrying amount $ 96.8