Supplemental Guarantor Information (Level 4 BS) (Details 1) - USD ($) $ in Thousands	Jan. 31, 2019	Oct. 31, 2018	Jan. 31, 2018	Oct. 31, 2017
ASSETS
Cash and cash equivalents	$ 801,734	$ 1,182,195	$ 508,277
Inventory	7,714,643	7,598,219
Property, construction and office equipment, net	294,658	193,281
Receivables, prepaid expenses and other assets	609,664	550,778
Mortgage loans held for sale	88,840	170,731
Customer deposits held in escrow	100,034	117,573
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	409,374	431,813
Investments in and advances to consolidated entities	0	0
Income taxes receivable	16,907	0
Total assets	10,035,854	10,244,590
Liabilities:
Loans payable	1,000,467	686,801
Senior notes	2,511,932	2,861,375
Mortgage company loan facility	74,135	150,000
Customer deposits	406,355	410,864
Accounts payable	302,042	362,098
Accrued expenses	879,734	973,581
Advances from Affiliiate	0	0
Income taxes payable	0	30,959
Total liabilities	5,174,665	5,475,678
Equity:
Common stock	1,779	1,779
Additional paid-in capital	717,405	727,053
Retained earnings	5,239,251	5,161,551
Treasury stock, at cost	(1,139,623)	(1,130,878)
Accumulated other comprehensive loss	750	694
Total stockholders' equity	4,819,562	4,760,199
Noncontrolling interest	41,627	8,713
Total equity	4,861,189	4,768,912	$ 4,464,890	$ 4,537,090
Total liabilities and stockholders' equity	10,035,854	10,244,590
Toll Brothers Inc. [Member]
ASSETS
Cash and cash equivalents	0	0
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	7
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	4,821,141	4,791,629
Income taxes receivable	16,907
Total assets	4,838,055	4,791,629
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	507	471
Advances from Affiliiate
Income taxes payable		30,959
Total liabilities	507	31,430
Equity:
Common stock	1,779	1,779
Additional paid-in capital	717,405	727,053
Retained earnings	5,257,237	5,161,551
Treasury stock, at cost	(1,139,623)	(1,130,878)
Accumulated other comprehensive loss	750	694
Total stockholders' equity	4,837,548	4,760,199
Noncontrolling interest
Total equity	4,837,548	4,760,199
Total liabilities and stockholders' equity	4,838,055	4,791,629
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	2,570,824	2,916,557
Income taxes receivable
Total assets	2,570,824	2,916,557
Liabilities:
Loans payable
Senior notes	2,511,932	2,861,375
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	41,051	37,341
Advances from Affiliiate
Income taxes payable
Total liabilities	2,552,983	2,898,716
Equity:
Common stock
Additional paid-in capital	49,400	49,400
Retained earnings	(31,559)	(31,559)
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	17,841	17,841
Noncontrolling interest
Total equity	17,841	17,841
Total liabilities and stockholders' equity	2,570,824	2,916,557
Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	624,608	1,011,863
Inventory	7,620,115	7,493,205
Property, construction and office equipment, net	278,238	169,265
Receivables, prepaid expenses and other assets	280,959	291,299
Mortgage loans held for sale
Customer deposits held in escrow	98,842	116,332
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	46,141	44,329
Investments in and advances to consolidated entities	111,740	91,740
Income taxes receivable
Total assets	9,060,643	9,218,033
Liabilities:
Loans payable	998,682	686,801
Senior notes
Mortgage company loan facility
Customer deposits	401,283	405,318
Accounts payable	301,450	361,655
Accrued expenses	513,617	600,907
Advances from Affiliiate	1,136,528	1,551,196
Income taxes payable
Total liabilities	3,351,560	3,605,877
Equity:
Common stock	48	48
Additional paid-in capital
Retained earnings	5,709,035	5,612,108
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	5,709,083	5,612,156
Noncontrolling interest
Total equity	5,709,083	5,612,156
Total liabilities and stockholders' equity	9,060,643	9,218,033
Nonguarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	177,126	170,332
Inventory	94,528	105,014
Property, construction and office equipment, net	16,420	24,016
Receivables, prepaid expenses and other assets	427,713	392,559
Mortgage loans held for sale	88,840	170,731
Customer deposits held in escrow	1,192	1,241
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	363,233	387,484
Investments in and advances to consolidated entities	147,518	126,872
Income taxes receivable
Total assets	1,316,570	1,378,249
Liabilities:
Loans payable	1,785
Senior notes
Mortgage company loan facility	74,135	150,000
Customer deposits	5,072	5,546
Accounts payable	592	443
Accrued expenses	427,268	462,128
Advances from Affiliiate	446,420	476,040
Income taxes payable
Total liabilities	955,272	1,094,157
Equity:
Common stock	3,006	3,006
Additional paid-in capital	113,734	93,734
Retained earnings	202,931	178,639
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	319,671	275,379
Noncontrolling interest	41,627	8,713
Total equity	361,298	284,092
Total liabilities and stockholders' equity	1,316,570	1,378,249
Eliminations [Member]
ASSETS
Cash and cash equivalents	0	0
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	(99,015)	(133,080)
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	(7,651,223)	(7,926,798)
Income taxes receivable
Total assets	(7,750,238)	(8,059,878)
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	(102,709)	(127,266)
Advances from Affiliiate	(1,582,948)	(2,027,236)
Income taxes payable
Total liabilities	(1,685,657)	(2,154,502)
Equity:
Common stock	(3,054)	(3,054)
Additional paid-in capital	(163,134)	(143,134)
Retained earnings	(5,898,393)	(5,759,188)
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	(6,064,581)	(5,905,376)
Noncontrolling interest
Total equity	(6,064,581)	(5,905,376)
Total liabilities and stockholders' equity	$ (7,750,238)	$ (8,059,878)