Supplemental Guarantor Information (Level 4 BS) (Details 1) - USD ($) $ in Thousands	Jan. 31, 2020	Oct. 31, 2019	Jan. 31, 2019	Oct. 31, 2018
ASSETS
Cash and cash equivalents	$ 519,793	$ 1,286,014	$ 801,734
Inventory	8,198,352	7,873,048
Property, construction and office equipment, net	285,785	273,412
Receivables, prepaid expenses and other assets	978,166	715,441
Mortgage loans held for sale	111,995	218,777
Customer deposits held in escrow	71,841	74,403
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	364,352	366,252
Investments in and advances to consolidated entities	0	0
Income Taxes Receivable	56,922	20,791
Total assets	10,587,206	10,828,138
Liabilities:
Loans payable	1,277,183	1,111,449
Senior notes	2,660,352	2,659,898
Mortgage company loan facility	97,653	150,000
Customer deposits	417,092	385,596	385,600
Accounts payable	314,482	348,599
Accrued expenses	1,011,548	950,932
Advances from Affiliiate	0	0
Income taxes payable	103,816	102,971
Total liabilities	5,882,126	5,709,445
Equity:
Common stock	1,529	1,529
Additional paid-in capital	723,109	726,879
Retained earnings	4,816,286	4,774,422
Treasury stock, at cost	(879,820)	(425,183)
Accumulated other comprehensive income	(5,553)	(5,831)
Total stockholders' equity	4,655,551	5,071,816
Noncontrolling interest	49,529	46,877
Total equity	4,705,080	5,118,693	$ 4,861,189	$ 4,768,912
Total liabilities and stockholders' equity	10,587,206	10,828,138
Toll Brothers Inc. [Member]
ASSETS
Cash and cash equivalents	0	0
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	5,840
Mortgage loans held for sale
Customer deposits held in escrow
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Investments in and advances to consolidated entities	4,721,368	5,172,737
Income Taxes Receivable	56,922	20,791
Total assets	4,784,130	5,193,528
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	6,776	754
Advances from Affiliiate
Income taxes payable	103,816	102,971
Total liabilities	110,592	103,725
Equity:
Common stock	1,529	1,529
Additional paid-in capital	723,109	726,879
Retained earnings	4,834,273	4,792,409
Treasury stock, at cost	(879,820)	(425,183)
Accumulated other comprehensive income	(5,553)	(5,831)
Total stockholders' equity	4,673,538	5,089,803
Noncontrolling interest
Total equity	4,673,538	5,089,803
Total liabilities and stockholders' equity	4,784,130	5,193,528
Subsidiary Issuer [Member]
ASSETS
Cash and cash equivalents	0	0
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets
Mortgage loans held for sale
Customer deposits held in escrow
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Investments in and advances to consolidated entities	2,724,966	2,704,551
Income Taxes Receivable
Total assets	2,724,966	2,704,551
Liabilities:
Loans payable
Senior notes	2,660,352	2,659,898
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	46,773	26,812
Advances from Affiliiate
Income taxes payable
Total liabilities	2,707,125	2,686,710
Equity:
Common stock
Additional paid-in capital	49,400	49,400
Retained earnings	(31,559)	(31,559)
Treasury stock, at cost
Accumulated other comprehensive income
Total stockholders' equity	17,841	17,841
Noncontrolling interest
Total equity	17,841	17,841
Total liabilities and stockholders' equity	2,724,966	2,704,551
Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	336,479	1,082,067
Inventory	8,102,794	7,791,759
Property, construction and office equipment, net	275,830	263,140
Receivables, prepaid expenses and other assets	300,894	224,681
Mortgage loans held for sale
Customer deposits held in escrow	71,568	74,303
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	44,361	50,594
Investments in and advances to consolidated entities	185,371	163,371
Income Taxes Receivable
Total assets	9,317,297	9,649,915
Liabilities:
Loans payable	1,275,341	1,109,614
Senior notes
Mortgage company loan facility
Customer deposits	414,790	383,583
Accounts payable	283,119	347,715
Accrued expenses	572,041	569,476
Advances from Affiliiate	527,929	1,052,370
Income taxes payable
Total liabilities	3,073,220	3,462,758
Equity:
Common stock	48	48
Additional paid-in capital
Retained earnings	6,244,029	6,187,109
Treasury stock, at cost
Accumulated other comprehensive income
Total stockholders' equity	6,244,077	6,187,157
Noncontrolling interest
Total equity	6,244,077	6,187,157
Total liabilities and stockholders' equity	9,317,297	9,649,915
Nonguarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	183,314	203,947
Inventory	95,558	81,289
Property, construction and office equipment, net	9,955	10,272
Receivables, prepaid expenses and other assets	750,123	610,541
Mortgage loans held for sale	111,995	218,777
Customer deposits held in escrow	273	100
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	319,991	315,658
Investments in and advances to consolidated entities	147,413	147,413
Income Taxes Receivable
Total assets	1,618,622	1,587,997
Liabilities:
Loans payable	36,100	36,092
Senior notes
Mortgage company loan facility	97,653	150,000
Customer deposits	2,302	2,013
Accounts payable	31,363	884
Accrued expenses	462,991	443,180
Advances from Affiliiate	507,995	503,058
Income taxes payable
Total liabilities	1,138,404	1,135,227
Equity:
Common stock	3,006	3,006
Additional paid-in capital	199,034	177,034
Retained earnings	228,649	225,853
Treasury stock, at cost
Accumulated other comprehensive income
Total stockholders' equity	430,689	405,893
Noncontrolling interest	49,529	46,877
Total equity	480,218	452,770
Total liabilities and stockholders' equity	1,618,622	1,587,997
Eliminations [Member]
ASSETS
Cash and cash equivalents	0	0
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	(78,691)	(119,781)
Mortgage loans held for sale
Customer deposits held in escrow
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Investments in and advances to consolidated entities	(7,779,118)	(8,188,072)
Income Taxes Receivable
Total assets	(7,857,809)	(8,307,853)
Liabilities:
Loans payable	(34,258)	(34,257)
Senior notes
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	(77,033)	(89,290)
Advances from Affiliiate	(1,035,924)	(1,555,428)
Income taxes payable
Total liabilities	(1,147,215)	(1,678,975)
Equity:
Common stock	(3,054)	(3,054)
Additional paid-in capital	(248,434)	(226,434)
Retained earnings	(6,459,106)	(6,399,390)
Treasury stock, at cost
Accumulated other comprehensive income
Total stockholders' equity	(6,710,594)	(6,628,878)
Noncontrolling interest
Total equity	(6,710,594)	(6,628,878)
Total liabilities and stockholders' equity	$ (7,857,809)	$ (8,307,853)