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Investments in Unconsolidated Entities (Details Textual) | 3 Months Ended | 9 Months Ended |
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Jul. 31, 2020 USD ($) joint_ventures home_sites rental_units Homes_sold | Jul. 31, 2019 USD ($) home_sites Homes_sold | Jul. 31, 2020 USD ($) joint_ventures home_sites Homes_sold rental_units | Jul. 31, 2019 USD ($) Homes_sold home_sites | Oct. 31, 2019 USD ($)
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 412,766,000 |  | $ 412,766,000 |  | $ 366,252,000
Line of Credit Facility, Maximum Borrowing Capacity | 1,809,619,000 |  | 1,809,619,000 |  |
Long-term Line of Credit | 1,327,675,000 |  | 1,327,675,000 |  |
Assets | 10,537,431,000 |  | 10,537,431,000 |  | 10,828,138,000
Other Commitment | $ 58,226,000 |  | $ 58,226,000 |  |
Number of Joint Ventures | joint_ventures | 45 |  | 45 |  |
Equity Method Investment, Other than Temporary Impairment |  | $ 0 | $ 3,000,000.0 | $ 0 |
Revenues | $ 1,651,489,000 | 1,765,691,000 | 4,531,992,000 | 4,844,966,000 |
Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues | 78,897,000 | $ 179,608,000 | 291,179,000 | $ 511,226,000 |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 412,766,000 |  | 412,766,000 |  | 366,252,000
Assets | 2,699,668,000 |  | 2,699,668,000 |  | 2,503,663,000
Rental Property Joint Ventures Northern New Jersey [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | 76,000,000.0
Rental Property Joint Ventures new fiscal 2020 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 213,200,000 |  | 213,200,000 |  |
Long-term Line of Credit | 29,000,000.0 |  | 29,000,000.0 |  |
Rental Property Joint Ventures new fiscal 2019 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 134,400,000 |  | 134,400,000 |  |
Long-term Line of Credit | $ 82,100,000 |  | $ 82,100,000 |  |
Land Development Joint Ventures [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Home sites sold | home_sites | 235 | 182 | 568 | 680 |
Line of Credit Facility, Maximum Borrowing Capacity | $ 158,823,000 |  | $ 158,823,000 |  |
Long-term Line of Credit | 133,654,000 |  | 133,654,000 |  |
Land Development Joint Ventures [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues | $ 15,500,000 | $ 43,500,000 | $ 59,400,000 | $ 182,400,000 |
Home Building Joint Ventures, Total [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Home sites sold | Homes_sold | 9 | 33 | 41 | 105 |
Line of Credit Facility, Maximum Borrowing Capacity | $ 43,054,000 |  | $ 43,054,000 |  |
Long-term Line of Credit | 43,054,000 |  | 43,054,000 |  |
Home Building Joint Ventures, Total [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues | 35,600,000 | $ 95,800,000 | 127,000,000.0 | $ 217,600,000 |
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 | 76,600,000 |  | 76,600,000 |  | 236,500,000
Long-term Line of Credit | $ 43,100,000 |  | $ 43,100,000 |  |
Rental Joint Ventures, including the Trust [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Number of Real Estate Properties | joint_ventures | 28 |  | 28 |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 1,607,742,000 |  | $ 1,607,742,000 |  |
Long-term Line of Credit | $ 1,150,967,000 |  | $ 1,150,967,000 |  |
Toll Brothers Realty Trust [Member] | Co-venturer [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 33.30% |  | 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% |  | 33.30% |  |
Rental Property Joint Ventures new fiscal 2020 Woburn MA [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 75,400,000 |  | $ 75,400,000 |  |
Long-term Line of Credit | 0 |  | 0 |  |
Land Development Joint Venture new fiscal 2020 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 48,000,000.0 |  | 48,000,000.0 |  |
Long-term Line of Credit | $ 32,700,000 |  | 32,700,000 |  |
Number of home sites included in acquisition | 309 |  |  |  |
Percentage of homes expected to be sold to each partner | 50.00% |  |  |  |
Rental Property Joint Ventures Northern New Jersey [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Proceeds from Sale of Equity Method Investments |  |  | 16,800,000 |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  |  | $ 10,700,000 |  |
Rental Property Joint Ventures new fiscal 2020 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Number of Real Estate Properties | joint_ventures | 5 |  | 5 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 53,500,000 |  | $ 53,500,000 |  |
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 |  | 2 |  |
Land sales earnings, net |  |  |  | $ 8,400,000 |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 15,800,000 |  | $ 15,800,000 |  |
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% |  | 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 | $ 129,019,000 |  | $ 129,019,000 |  |
Number of Joint Ventures | joint_ventures | 9 |  | 9 |  |
Land Development Joint Ventures [Member] | Equity Method Investee [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Home sites sold | home_sites | 32 | 53 | 118 | 248 |
Land Development Joint Ventures [Member] | Equity Method Investee [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues | $ 2,700,000 | $ 20,400,000 | $ 10,500,000 | $ 116,900,000 |
Toll Brothers Realty Trust [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 33.30% |  | 33.30% |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 0 |  | $ 0 |  |
Property Management Fee Revenue |  |  | $ 800,000 |  |
Gibraltar Land Banking & Development Joint Ventures [Member] [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 25.00% |  | 25.00% |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 20,800,000 |  | $ 20,800,000 |  |
Number of Joint Ventures | joint_ventures | 6 |  | 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 | $ 2,900,000 |  | $ 2,900,000 |  |
Rental Property Joint Ventures new fiscal 2020 Woburn MA [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Land sales earnings, net |  |  | 900,000 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 9,100,000 |  | $ 9,100,000 |  |
Rental Property Joint Ventures new fiscal 2020 Woburn MA [Member] | Co-venturer [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 75.00% |  | 75.00% |  |
Land Development Joint Venture new fiscal 2020 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 24,600,000 |  | $ 24,600,000 |  |
Land Development Joint Venture new fiscal 2020 [Member] | Co-venturer [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  | 50.00% |  |
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 |  | 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 | 2,050 |  | 2,050 |  |
Asset under Construction [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Number of Units in Real Estate Property | rental_units | 200 |  | 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 | 5,000 |  | 5,000 |  |
In Planning Phase [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Number of Units in Real Estate Property | rental_units | 10,650 |  | 10,650 |  |
Rental Property Joint Ventures new fiscal 2019 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Payments to Acquire and Develop Real Estate |  |  |  | 41,900,000 |
Rental Property Joint Ventures new fiscal 2020 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Payments to Acquire and Develop Real Estate |  |  | $ 73,700,000 |  |
Rental Joint Ventures, including the Trust [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Number of Real Estate Properties | joint_ventures | 5 |  | 5 |  |
Real Estate Investment Property, at Cost |  |  |  |  | 95,500,000
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 |  | 5 |  |
Assets | $ 155,000,000.0 |  | $ 155,000,000.0 |  | 145,800,000
Noncontrolling Interest in Variable Interest Entity | 45,100,000 |  | 45,100,000 |  | $ 41,000,000.0
Land [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues | 23,677,000 | $ 8,721,000 | 90,609,000 | 56,631,000 |
Land [Member] | Rental Property Joint Ventures new fiscal 2020 [Member] | Co-venturer [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues |  |  | 39,100,000 |  |
Land [Member] | Rental Property Joint Ventures new fiscal 2019 [Member] | Co-venturer [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues |  |  |  | $ 39,800,000 |
Land [Member] | Rental Property Joint Ventures new fiscal 2020 Woburn MA [Member] | Co-venturer [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Revenues |  |  | 19,100,000 |  |
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 | 30,300,000 |  | 30,300,000 |  |
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 | 100,000,000.0 |  | 100,000,000.0 |  |
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 | 60,000,000.0 |  | 60,000,000.0 |  |
Commitment To Advance Or Invest In Affiliates Subsidiaries And Joint Venture [Member] | Land Development Joint Venture new fiscal 2020 [Member] |  |  |  |  |
Investments in and Advances to Unconsolidated Entities (Textual) [Abstract] |  |  |  |  |
Other Commitment | $ 2,000,000.0 |  | $ 2,000,000.0 |  |
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% |  | 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% |  | 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% |  | 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% |  | 98.00% |  |

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