XML 67 R65.htm IDEA: XBRL DOCUMENT v2.4.0.8
Long-term Debt - Summary of Loss Incurred on Repurchase of Debt Instruments (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2014
Aug. 31, 2013
Debt Instrument [Line Items]        
Loss on 4 1/16% Debentures repurchased $ (9.8) $ 0 $ (60.6) $ 0
4.0625% Convertible Subordinated Debentures [Member]
       
Debt Instrument [Line Items]        
Principal amount repurchased     59.6  
Cash repurchase price     (119.9)  
Write-off of deferred financing costs     (0.3)  
Loss on 4 1/16% Debentures repurchased     $ (60.6)