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Note 16 - Employee Benefit Plans (Tables)
12 Months Ended
Sep. 30, 2012
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
         
Weighted Average
       
Options
 
Shares
   
Exercise
Price
   
Remaining
Contractual
Term
   
Aggregate
Intrinsic
Value
 
   
(thousands)
   
(per share)
   
(years)
   
(millions)
 
Outstanding at beginning of fiscal year
    15,245     $ 18.85              
Granted
    294       16.21              
Exercised
    (827 )     12.04              
Forfeited
    (683 )     16.45              
Expired
    (1,912 )     26.86              
Outstanding at end of period
    12,117     $ 18.12       6.0     $ 5.3  
                                 
Vested and expected to vest
    11,932     $ 18.15       5.9     $ 5.3  
                                 
Exercisable at end of period
    7,320     $ 19.59       4.9     $ 3.6  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
         
Weighted Average
       
Restricted Shares/Units
 
Shares
   
Grant
Date
Fair Value
   
Remaining
Vesting
Period
   
Aggregate
Intrinsic
Value
 
   
(thousands)
   
(per share)
   
(years)
   
(millions)
 
Outstanding at beginning of fiscal year
    3,388     $ 15.26              
Granted
    2,815       15.05              
Vested
    (708 )     17.40              
Forfeited
    (662 )     14.58              
Outstanding at end of period
    4,833     $ 14.93       1.3     $ 63.3  
                                 
Expected to vest
    4,567     $ 14.93       1.3     $ 59.8  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used
Years Ended September 30,
 
2012
   
2011
   
2010
 
                   
Expected volatility
    0.47       0.44       0.52  
Expected dividends
    1.48 %     1.53 %     1.28 %
Expected term (in years)
    4.7       4.6       4.4  
Risk free rate
    0.85 %     1.73 %     1.62 %
Schedule of Share-based Compensation, Activity [Table Text Block]
Years Ended September 30,
 
2012
   
2011
   
2010
 
Pre-tax
  $ 33.2     $ 43.8     $ 41.9  
Tax benefit
    (10.4 )     (13.6 )     (13.1 )
After-tax
  $ 22.8     $ 30.2     $ 28.8  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Years Ended September 30,
 
2012
   
2011
   
2010
 
Weighted average grant date fair value per share:
                 
Options granted
  $ 5.70     $ 5.33     $ 7.34  
Restricted shares granted
  $ 15.05     $ 14.25     $ 18.20  
                         
Total intrinsic value of options exercised
  $ 3.8     $ 5.6     $ 4.5  
Total fair value of restricted shares vested
    11.6       14.9       14.3  
Tax benefit realized for tax return deductions
    5.5       7.1       8.1  
Schedule of Other Share-based Compensation, Activity [Table Text Block]
Other Information
     
Shares available for future grant (million)
    28.4  
Unrecognized costs for outstanding awards (million)
  $ 63.8  
Weighted average future recognition period (years)
    1.7