Supplemental Guarantor Information (Level 4 IS) (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Supplemental Condensed Consolidating Statement of Operations
Revenues	$ 1,363,181	$ 1,175,468
Cost of revenues	1,076,498	934,480
Selling, general and administrative	162,238	157,267
Total		1,091,747
Income (loss) from operations	124,445	83,721
Other [Abstract]
Income (loss) from unconsolidated entities	6,140	38,880
Other income - net	20,861	8,997
Intercompany interest income	0	0
Interest Expense	0	0
Income from subsidiaries	0	0
Income (loss) before income taxes	151,446	131,598
Income tax provision	39,396	(509)
Net income (loss)	112,050	132,107
Other Comprehensive Income (Loss), Net of Tax	56	171
Comprehensive Income (loss), Net of Tax, Attributable to Parent	112,106	132,278
Toll Brothers Inc. [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	0
Cost of revenues	0
Selling, general and administrative	390	18
Total		18
Income (loss) from operations	(390)	(18)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net
Intercompany interest income
Interest Expense
Income from subsidiaries	151,836	131,616
Income (loss) before income taxes	151,446	131,598
Income tax provision	39,396	(509)
Net income (loss)	112,050	132,107
Other Comprehensive Income (Loss), Net of Tax	56	171
Comprehensive Income (loss), Net of Tax, Attributable to Parent	112,106	132,278
Subsidiary Issuer [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	0
Cost of revenues	0
Selling, general and administrative	733	840
Total		840
Income (loss) from operations	(733)	(840)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net
Intercompany interest income	34,121	32,695
Interest Expense	(33,388)	(31,855)
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	1,307,529	1,115,354
Cost of revenues	1,025,033	874,808
Selling, general and administrative	169,917	162,079
Total		1,036,887
Income (loss) from operations	112,579	78,467
Other [Abstract]
Income (loss) from unconsolidated entities	5,387	5,132
Other income - net	5,497	5,885
Intercompany interest income	527
Interest Expense	(1,505)	(1,023)
Income from subsidiaries	29,352	41,901
Income (loss) before income taxes	151,837	130,362
Income tax provision	39,497	(12,529)
Net income (loss)	112,340	142,891
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	112,340	142,891
Nonguarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	100,427	104,114
Cost of revenues	67,241	77,487
Selling, general and administrative	18,753	20,173
Total		97,660
Income (loss) from operations	14,433	6,454
Other [Abstract]
Income (loss) from unconsolidated entities	753	33,748
Other income - net	13,231	1,044
Intercompany interest income	1,505	1,023
Interest Expense	(571)	(368)
Income from subsidiaries
Income (loss) before income taxes	29,351	41,901
Income tax provision	7,635	11,861
Net income (loss)	21,716	30,040
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	21,716	30,040
Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	(44,775)	(44,000)
Cost of revenues	(15,776)	(17,815)
Selling, general and administrative	(27,555)	(25,843)
Total		(43,658)
Income (loss) from operations	(1,444)	(342)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net	2,133	2,068
Intercompany interest income	(36,153)	(33,718)
Interest Expense	35,464	33,246
Income from subsidiaries	(181,188)	(173,517)
Income (loss) before income taxes	(181,188)	(172,263)
Income tax provision	(47,132)	668
Net income (loss)	(134,056)	(172,931)
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	(134,056)	(172,931)
Home Building [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	1,319,308	1,175,468
Cost of revenues	1,042,245	934,480
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	1,292,196
Cost of revenues	1,020,895
Home Building [Member] | Nonguarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	27,112
Cost of revenues	21,350
Home Building [Member] | Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Land [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	43,873	0
Cost of revenues	34,253	$ 0
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	15,333
Cost of revenues	4,138
Land [Member] | Nonguarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	73,315
Cost of revenues	45,891
Land [Member] | Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	(44,775)
Cost of revenues	$ (15,776)