Supplemental Guarantor Information (Level 4 IS) (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Supplemental Condensed Consolidating Statement of Operations
Revenues	$ 1,331,431	$ 1,363,181
Cost of revenues	1,092,182	1,076,498
Selling, general and administrative	191,753	162,238
Income (loss) from operations	47,496	124,445
Other [Abstract]
Income (loss) from unconsolidated entities	12,141	6,140
Other income - net	6,295	20,861
Intercompany interest income	0	0
Interest Expense	0	0
Income from subsidiaries	0	0
Income (loss) before income taxes	65,932	151,446
Income tax provision	9,056	39,396
Net income (loss)	56,876	112,050
Other Comprehensive Income (Loss), Net of Tax	278	56
Comprehensive Income (loss), Net of Tax, Attributable to Parent	57,154	112,106
Toll Brothers Inc. [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	0	0
Cost of revenues	0	0
Selling, general and administrative	52	390
Income (loss) from operations	(52)	(390)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net
Intercompany interest income
Interest Expense
Income from subsidiaries	65,984	151,836
Income (loss) before income taxes	65,932	151,446
Income tax provision	9,056	39,396
Net income (loss)	56,876	112,050
Other Comprehensive Income (Loss), Net of Tax	278	56
Comprehensive Income (loss), Net of Tax, Attributable to Parent	57,154	112,106
Subsidiary Issuer [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	0	0
Cost of revenues	0	0
Selling, general and administrative	24	733
Income (loss) from operations	(24)	(733)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net
Intercompany interest income	36,370	34,121
Interest Expense	(36,346)	(33,388)
Income from subsidiaries
Income (loss) before income taxes	0	0
Income tax provision
Net income (loss)	0	0
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	0	0
Guarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	1,307,173	1,307,529
Cost of revenues	1,065,560	1,025,033
Selling, general and administrative	197,950	169,917
Income (loss) from operations	43,663	112,579
Other [Abstract]
Income (loss) from unconsolidated entities	14,202	5,387
Other income - net	4,666	5,497
Intercompany interest income	1,505	527
Interest Expense	(1,293)	(1,505)
Income from subsidiaries	3,241	29,352
Income (loss) before income taxes	65,984	151,837
Income tax provision	9,063	39,497
Net income (loss)	56,921	112,340
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	56,921	112,340
Nonguarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	66,235	100,427
Cost of revenues	44,837	67,241
Selling, general and administrative	16,796	18,753
Income (loss) from operations	4,602	14,433
Other [Abstract]
Income (loss) from unconsolidated entities	(2,061)	753
Other income - net	968	13,231
Intercompany interest income	1,293	1,505
Interest Expense	(1,561)	(571)
Income from subsidiaries
Income (loss) before income taxes	3,241	29,351
Income tax provision	444	7,635
Net income (loss)	2,797	21,716
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	2,797	21,716
Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	(41,977)	(44,775)
Cost of revenues	(18,215)	(15,776)
Selling, general and administrative	(23,069)	(27,555)
Income (loss) from operations	(693)	(1,444)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net	661	2,133
Intercompany interest income	(39,168)	(36,153)
Interest Expense	39,200	35,464
Income from subsidiaries	(69,225)	(181,188)
Income (loss) before income taxes	(69,225)	(181,188)
Income tax provision	(9,507)	(47,132)
Net income (loss)	(59,718)	(134,056)
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	(59,718)	(134,056)
Home Building [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	1,297,337	1,319,308
Cost of revenues	1,059,900	1,042,245
Home Building [Member] | Toll Brothers Inc. [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Home Building [Member] | Subsidiary Issuer [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Home Building [Member] | Guarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	1,289,377	1,292,196
Cost of revenues	1,053,702	1,020,895
Home Building [Member] | Nonguarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	7,960	27,112
Cost of revenues	6,002	21,350
Home Building [Member] | Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues	196
Land [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	34,094	43,873
Cost of revenues	32,282	34,253
Land [Member] | Toll Brothers Inc. [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Land [Member] | Subsidiary Issuer [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Land [Member] | Guarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	17,796	15,333
Cost of revenues	11,858	4,138
Land [Member] | Nonguarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	58,275	73,315
Cost of revenues	38,835	45,891
Land [Member] | Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	(41,977)	(44,775)
Cost of revenues	$ (18,411)	$ (15,776)