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Loans Payable, Senior Notes and Mortgage Company Loan Facility Senior Notes Payable (Details Textual 4)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 31, 2015
USD ($)
debtissuances
Jul. 31, 2015
USD ($)
debtissuances
Jul. 31, 2014
USD ($)
Oct. 31, 2014
USD ($)
Nov. 13, 2013
Nov. 12, 2013
Jun. 02, 2005
Mar. 16, 2004
Senior Note Payable (Textual) [Abstract]                
Number of issuances of senior debt | debtissuances 7 7            
Issued Senior Notes $ 2,356,068 $ 2,356,068   $ 2,655,044        
Redemption of senior notes   $ 300,000 $ 267,960          
Proceeds from Issuance of Senior Long-term Debt     600,000          
Senior Notes Issued for Cash [Member]                
Senior Note Payable (Textual) [Abstract]                
Debt Instrument, Face Amount 2,360,000 $ 2,360,000            
Four Point Nine Fine Percent Senior Notes Due two thousand and fourteen [Member]                
Senior Note Payable (Textual) [Abstract]                
Redemption of senior notes     268,000          
Debt Instrument, Interest Rate, Stated Percentage               4.95%
Four percent Senior Notes due two thousand and eighteen [Member]                
Senior Note Payable (Textual) [Abstract]                
Proceeds from Issuance of Senior Long-term Debt     350,000          
Debt Instrument, Interest Rate, Stated Percentage           4.00%    
Proceeds from Debt, Net of Issuance Costs     596,000          
five point six two five percent Senior notes due twenty twenty four [Member]                
Senior Note Payable (Textual) [Abstract]                
Proceeds from Issuance of Senior Long-term Debt     $ 250,000          
Debt Instrument, Interest Rate, Stated Percentage         5.625%      
5.15% Senior Notes due 2015 [Member]                
Senior Note Payable (Textual) [Abstract]                
Debt Instrument, Interest Rate, Stated Percentage             5.15%  
Subsequent Event [Member]                
Senior Note Payable (Textual) [Abstract]                
Redemption of senior notes $ 300,000