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Investments in Unconsolidated Entities (Details Textual) $ in Thousands	3 Months Ended
	Jan. 31, 2020 USD ($) joint_ventures Homes_sold rental_units home_sites	Jan. 31, 2019 USD ($) Homes_sold home_sites	Oct. 31, 2019 USD ($)
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Summarized Financial Information, Revenue	$ 133,170	$ 153,230
Revenues	1,331,431	$ 1,363,181
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	364,352		$ 366,252
Line of Credit Facility, Maximum Borrowing Capacity	1,615,647
Long-term Line of Credit	1,168,731
Other Commitment	$ 36,562
Number of Joint Ventures \| joint_ventures	40
Rental Property Joint Ventures Northern New Jersey [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity			76,000
Rental Property Joint Ventures new fiscal 2020 [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 121,500
Long-term Line of Credit	0
Rental Property Joint Ventures new fiscal 2019 [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	134,400
Long-term Line of Credit	$ 38,900
Land Development Joint Ventures [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Home sites sold \| home_sites	164	201
Equity Method Investment, Summarized Financial Information, Revenue	$ 24,700	$ 89,800
Line of Credit Facility, Maximum Borrowing Capacity	100,842
Long-term Line of Credit	$ 86,092
Home Building Joint Ventures, Total [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Home sites sold \| Homes_sold	23	17
Equity Method Investment, Summarized Financial Information, Revenue	$ 67,100	$ 27,300
Line of Credit Facility, Maximum Borrowing Capacity	73,021
Long-term Line of Credit	73,021
Home Building Joint Venture Metro New York Five [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	76,600		236,500
Long-term Line of Credit	$ 73,000
Rental Joint Ventures, including the Trust [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Real Estate Properties \| joint_ventures	26
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,441,784
Long-term Line of Credit	$ 1,009,618
Toll Brothers Realty Trust [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	33.30%
Toll Brothers Realty Trust [Member] \| Management [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	33.30%
Rental Property Joint Ventures Northern New Jersey [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Proceeds from Sale of Equity Method Investments	$ 16,800
Equity Method Investment, Realized Gain (Loss) on Disposal	$ 10,700
Rental Property Joint Ventures new fiscal 2020 [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Real Estate Properties \| joint_ventures	2
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 25,000
Rental Property Joint Ventures new fiscal 2019 [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Real Estate Properties \| joint_ventures	2
Land sales earnings, net		$ 8,400
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 15,600
Rental Property Joint Ventures new fiscal 2019 [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	75.00%
Land Development Joint Ventures [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 101,946
Number of Joint Ventures \| joint_ventures	8
Land Development Joint Ventures [Member] \| Equity Method Investee [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Home sites sold \| home_sites	42	107
Equity Method Investment, Summarized Financial Information, Revenue	$ 3,500	$ 71,200
Toll Brothers Realty Trust [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	33.30%
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 0
Property Management Fee Revenue	$ 300	300
Gibraltar Land Banking & Development Joint Ventures [Member] [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	25.00%
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 21,400
Number of Joint Ventures \| joint_ventures	6
Single Family Build to Rent JV [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 1,100
Occupied or Ready for Occupancy [Member] \| Rental Joint Ventures, including the Trust [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Units in Real Estate Property \| rental_units	2,000
Lease up Stage [Member] \| Rental Joint Ventures, including the Trust [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Units in Real Estate Property \| rental_units	1,250
Asset under Construction [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Units in Real Estate Property \| rental_units	200
Asset under Construction [Member] \| Rental Joint Ventures, including the Trust [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Units in Real Estate Property \| rental_units	4,800
In Planning Phase [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Units in Real Estate Property \| rental_units	13,400
Rental Property Joint Ventures new fiscal 2019 [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Payments to Acquire and Develop Real Estate		41,900
Rental Property Joint Ventures new fiscal 2020 [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Payments to Acquire and Develop Real Estate	$ 51,000
Rental Joint Ventures, including the Trust [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Real Estate Investment Property, at Cost			95,500
Variable Interest Entity, Primary Beneficiary [Member] \| Rental Joint Ventures, including the Trust [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Number of Real Estate Properties \| joint_ventures	5
Variable Interest Entity, Consolidated, Carrying Amount, Assets	$ 157,900		145,800
Noncontrolling Interest in Variable Interest Entity	43,500		$ 41,000
Land [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Revenues	34,094	43,873
Land [Member] \| Rental Property Joint Ventures new fiscal 2020 [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Revenues	26,200
Land [Member] \| Rental Property Joint Ventures new fiscal 2019 [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Revenues		$ 39,800
Commitment To Advance Or Invest In Affiliates Subsidiaries And Joint Venture [Member] \| Land Development Joint Ventures [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Other Commitment	28,108
Commitment To Advance Or Invest In Affiliates Subsidiaries And Joint Venture [Member] \| Gibraltar Land Banking & Development Joint Ventures [Member] [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Other Commitment	100,000
Commitment To Advance Or Invest In Affiliates Subsidiaries And Joint Venture [Member] \| Single Family Build to Rent JV [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Other Commitment	$ 60,000
Minimum [Member] \| Rental Property Joint Ventures new fiscal 2020 [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	50.00%
Minimum [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Rental Property Joint Ventures new fiscal 2019 [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	50.00%
Maximum [Member] \| Rental Property Joint Ventures new fiscal 2020 [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	70.00%
Maximum [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Rental Property Joint Ventures new fiscal 2019 [Member] \| Co-venturer [Member]
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	98.00%