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Financial Instruments (Tables)
12 Months Ended
Nov. 30, 2011
Derivatives, Fair Value [Line Items]  
Fair Values Of Derivative Instruments
(millions)    Asset Derivatives        Liability Derivatives  
Derivatives    Balance sheet
location
     Notional amount     Fair value        Balance sheet
location
   Notional amount      Fair value  

Interest rate contracts

     Other current assets         $100.0                    $18.9                  –                       –           

Foreign exchange contracts

     Other current assets         97.4                     2.7             Other accrued
liabilities
     $  30.2                      $0.4           

Total

                      $21.6                             $0.4           

As of

November 30, 2010:

                                        
(millions)    Asset Derivatives        Liability Derivatives  
Derivatives    Balance sheet
location
     Notional amount     Fair value        Balance sheet
location
   Notional amount      Fair value  

Interest rate contracts

     Other current assets         $100.0                    $19.2                  –                       –           

Foreign exchange contracts

     Other current assets         4.5                    0.2             Other accrued
liabilities
     $203.7                     $2.8           

Total

                      $19.4                             $2.8           
Carrying Amount And Fair Value Of Financial Instruments
      2011      2010  
(millions)    Carrying
amount
     Fair
value
     Carrying
amount
     Fair
value
 

Long-term investments

     $  71.4         $  71.4         $  65.8         $  65.8   

Long-term debt

     1,035.1         1,136.6         880.1         959.4   

Derivatives related to:

           

Interest rates (assets)

     18.9         18.9         19.2         19.2   

Foreign currency (assets)

     2.7         2.7         0.2         0.2   

Foreign currency (liabilities)

     0.4         0.4         2.8         2.8   
Fair Value Hedges [Member]
 
Derivatives, Fair Value [Line Items]  
Impact Of Derivative Instruments
Fair value hedges (millions)  
    

Income statement

location

        Income (expense)  
Derivative         2011        2010      2009  

Interest rate contracts

   Interest expense          $4.9           $4.9         $4.1   
Cash Flow Hedges [Member]
 
Derivatives, Fair Value [Line Items]  
Impact Of Derivative Instruments
Cash flow hedges (millions)
    Gain (loss)
recognized in OCI
  

        Income statement      

        location      

       Gain (loss)
  reclassified from AOCI   
Derivative   2011    2010    2009            2011    2010    2009

Terminated interest rate contracts

     —      —              Interest expense            $(1.4)      $(1.4)    $(1.4)

Foreign exchange contracts

  $(0.4)      $(0.9)      $(3.0)              Cost of goods sold                 (3.4)         (0.1)      5.3

Total

  $(0.4)      $(0.9)      $(3.0)               $(4.8)      $(1.5)    $  3.9