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Fair Value Disclosures (Level 4 debt fv) (Details 2) - USD ($)
$ in Thousands
Jul. 31, 2022
Oct. 31, 2021
Book value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure $ 3,315,995 $ 3,571,410
Book value [Member] | Fair Value, Inputs, Level 2 [Member] | Loans Payable [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure 1,202,290 1,014,042
Book value [Member] | Fair Value, Inputs, Level 2 [Member] | Warehouse Agreement Borrowings [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure 113,705 147,512
Book value [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure 2,000,000 2,409,856
Estimate fair value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure 3,251,771 3,746,992
Estimate fair value [Member] | Fair Value, Inputs, Level 2 [Member] | Loans Payable [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure 1,195,745 1,021,662
Estimate fair value [Member] | Fair Value, Inputs, Level 2 [Member] | Warehouse Agreement Borrowings [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure 113,705 147,512
Estimate fair value [Member] | Fair Value, Inputs, Level 1 [Member] | Senior Notes [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument, Fair Value Disclosure $ 1,942,321 $ 2,577,818