Supplemental Guarantor Information (Level 4 IS) (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Supplemental Condensed Consolidating Statement of Operations
Revenues	$ 1,175,468	$ 920,730
Cost of revenues	934,480	733,002
Selling, general and administrative	157,267	137,095
Total	1,091,747	870,097
Income (loss) from operations	83,721	50,633
Other [Abstract]
Income (loss) from unconsolidated entities	38,880	46,445
Other income - net	8,997	12,703
Intercompany interest income	0	0
Interest Expense	0	0
Income from subsidiaries	0	0
Income (loss) before income taxes	131,598	109,781
Income tax (benefit) provision	(509)	39,365
Net income (loss)	132,107	70,416
Other Comprehensive Income (Loss), Net of Tax	171	169
Comprehensive Income (loss), Net of Tax, Attributable to Parent	132,278	70,585
Toll Brothers Inc. [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Selling, general and administrative	18
Total	18	0
Income (loss) from operations	(18)	0
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net		2,393
Intercompany interest income
Interest Expense
Income from subsidiaries	131,616	107,388
Income (loss) before income taxes	131,598	109,781
Income tax (benefit) provision	(509)	39,365
Net income (loss)	132,107	70,416
Other Comprehensive Income (Loss), Net of Tax	171	169
Comprehensive Income (loss), Net of Tax, Attributable to Parent	132,278	70,585
Subsidiary Issuer [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Selling, general and administrative	840	968
Total	840	968
Income (loss) from operations	(840)	(968)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net
Intercompany interest income	32,695	36,496
Interest Expense	(31,855)	(37,895)
Income from subsidiaries
Income (loss) before income taxes	0	(2,367)
Income tax (benefit) provision		(849)
Net income (loss)	0	(1,518)
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	0	(1,518)
Guarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	1,115,354	915,823
Cost of revenues	874,808	724,257
Selling, general and administrative	162,079	143,881
Total	1,036,887	868,138
Income (loss) from operations	78,467	47,685
Other [Abstract]
Income (loss) from unconsolidated entities	5,132	5,144
Other income - net	5,885	7,251
Intercompany interest income
Interest Expense	(1,023)
Income from subsidiaries	41,901	42,048
Income (loss) before income taxes	130,362	102,128
Income tax (benefit) provision	(12,529)	36,621
Net income (loss)	142,891	65,507
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	142,891	65,507
Nonguarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	104,114	45,696
Cost of revenues	77,487	29,471
Selling, general and administrative	20,173	16,948
Total	97,660	46,419
Income (loss) from operations	6,454	(723)
Other [Abstract]
Income (loss) from unconsolidated entities	33,748	41,301
Other income - net	1,044	4,500
Intercompany interest income	1,023
Interest Expense	(368)	(663)
Income from subsidiaries
Income (loss) before income taxes	41,901	44,415
Income tax (benefit) provision	11,861	15,926
Net income (loss)	30,040	28,489
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	30,040	28,489
Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues	(44,000)	(40,789)
Cost of revenues	(17,815)	(20,726)
Selling, general and administrative	(25,843)	(24,702)
Total	(43,658)	(45,428)
Income (loss) from operations	(342)	4,639
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net	2,068	(1,441)
Intercompany interest income	(33,718)	(36,496)
Interest Expense	33,246	38,558
Income from subsidiaries	(173,517)	(149,436)
Income (loss) before income taxes	(172,263)	(144,176)
Income tax (benefit) provision	668	(51,698)
Net income (loss)	(172,931)	(92,478)
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (loss), Net of Tax, Attributable to Parent	$ (172,931)	$ (92,478)