Investments in Unconsolidated Entities Investments in Unconsolidated Entities (Details Textual 2) $ in Thousands	12 Months Ended
	Oct. 31, 2019 USD ($) joint_ventures	Oct. 31, 2018 USD ($) joint_ventures
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Amounts borrowed under commitments	$ 1,239,493
Investments in unconsolidated entities	366,252	$ 431,813
Other Commitment	38,796
Line of Credit Facility, Maximum Borrowing Capacity	1,628,150
Equity Method Investee [Member]
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Guarantees, Fair Value Disclosure	$ 5,600
Number Of Unconsolidated Entities That Are Considered Variable Interest Entities | joint_ventures	13	10
Indirect Guarantee of Indebtedness [Member] | Equity Method Investee [Member]
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Amounts borrowed under commitments	$ 1,140,000
Maximum repapyment and carry cost guarantee obligation for borrowings by JV	239,600
Line of Credit Facility, Maximum Borrowing Capacity	1,530,000
Guarantees, Repayment and Carry Cost, Maximum	$ 299,100
Indirect Guarantee of Indebtedness [Member] | Equity Method Investee [Member] | Minimum [Member]
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Guarantor Obligations, Term	P2M
Indirect Guarantee of Indebtedness [Member] | Equity Method Investee [Member] | Maximum [Member]
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Guarantor Obligations, Term	P9Y8M12D
Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member] | Equity Method Investee [Member]
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Investments in unconsolidated entities	$ 37,000	$ 33,800
Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member] | Indirect Guarantee of Indebtedness [Member] | Equity Method Investee [Member]
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	76,000	70,000
Maximum repapyment and carry cost guarantee obligation for borrowings by JV	76,000	70,000
Guarantees, Repayment and Carry Cost, Maximum	76,000	70,000
Commitment To Advance Or Invest In Affiliates Subsidiaries And Joint Ventures [Member] | Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member] | Equity Method Investee [Member]
Statement of Investments in and Advances to Unconsolidated Entities [Line Items]
Other Commitment	$ 8,300	$ 10,800