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Note 22 (Detail) (USD $)
 3 Months Ended 6 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Apr. 30, 2012
Oct. 31, 2012
Loans Held for Sale, Mortgages, Unpaid Principal $ 82,200,000   $ 82,200,000   $ 113,800,000
Loan Applications in Process 496,500,000   496,500,000    
Number of Days in Commitment 60 days   60 days    
Other Commitment 9,000,000   9,000,000    
Impairment of Real Estate 900,000 2,100,000 1,500,000 [1] 5,200,000  
Interest Rate Committed [Member]
          
Interest Rate Committed Loan Applications 54,600,000   54,600,000    
Fair Value, Inputs, Level 2 [Member] | Senior Secured Notes [Member]
          
Notes Payable, Fair Value Disclosure 488,500,000   488,500,000    
Fair Value, Inputs, Level 2 [Member] | Senior Notes [Member]
          
Notes Payable, Fair Value Disclosure 4,700,000   4,700,000    
Fair Value, Inputs, Level 2 [Member] | Senior Unsecured Notes [Member]
          
Notes Payable, Fair Value Disclosure         448,700,000
Fair Value, Inputs, Level 2 [Member] | Senior Subordinated Notes [Member]
          
Notes Payable, Fair Value Disclosure         5,500,000
Fair Value, Inputs, Level 3 [Member] | Senior Secured Notes [Member]
          
Notes Payable, Fair Value Disclosure 1,062,100,000   1,062,100,000   994,200,000
Fair Value, Inputs, Level 3 [Member] | Senior Amortizing Notes [Member]
          
Notes Payable, Fair Value Disclosure 23,100,000   23,100,000   23,100,000
Fair Value, Inputs, Level 3 [Member] | Senior Exchangeable Notes [Member]
          
Notes Payable, Fair Value Disclosure $ 86,300,000   $ 86,300,000   $ 87,200,000
[1] During the six months ended April 30, 2013, the Mid-Atlantic had an impairment totaling $2 thousand and the Southeast had an impairment totaling $17 thousand.