Supplemental Guarantor Information (Level 4 IS) (Details 2) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Supplemental Condensed Consolidating Statement of Operations
Revenues	$ 1,855,451	$ 1,269,934	$ 1,115,557	$ 928,566	$ 1,437,202	$ 1,028,011	$ 852,583	$ 853,452	$ 5,169,508	$ 4,171,248	$ 3,911,602
Cost of revenues									4,144,065	3,269,270	3,081,837
Selling, general and administrative									535,382	455,108	432,516
Total									4,679,447	3,724,378	3,514,353
Income (loss) from operations									490,061	446,870	397,249
Other [Abstract]
Income (loss) from unconsolidated entities									40,748	21,119	41,141
Other income - net									58,218	67,573	66,192
Intercompany interest income									0	0	0
Interest Expense									0	0	0
Loss from subsidiaries									0	0	0
Income (loss) before income tax benefit	168,160	163,653	140,397	116,817	217,543	107,464	86,532	124,023	589,027	535,562	504,582
Income tax provision									206,932	172,395	164,550
Net income	$ 114,378	$ 105,483	$ 89,054	$ 73,180	$ 147,163	$ 66,749	$ 67,930	$ 81,325	382,095	363,167	340,032
Other Comprehensive Income (Loss), Net of Tax									(827)	329	(451)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									381,268	363,496	339,581
Toll Brothers Inc. [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Selling, general and administrative									75	113	132
Total									75	113	132
Income (loss) from operations									(75)	(113)	(132)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net									9,501	9,429	9,403
Intercompany interest income
Interest Expense
Loss from subsidiaries									579,601	526,246	495,311
Income (loss) before income tax benefit									589,027	535,562	504,582
Income tax provision									206,932	172,395	164,550
Net income									382,095	363,167	340,032
Other Comprehensive Income (Loss), Net of Tax									(858)	311	(677)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									381,237	363,478	339,355
Subsidiary Issuer [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues
Cost of revenues
Selling, general and administrative									3,809	3,560	3,670
Total									3,809	3,560	3,670
Income (loss) from operations									(3,809)	(3,560)	(3,670)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net
Intercompany interest income									145,828	137,362	148,177
Interest Expense									(151,410)	(143,193)	(153,898)
Loss from subsidiaries
Income (loss) before income tax benefit									(9,391)	(9,391)	(9,391)
Income tax provision									(3,299)	(3,628)	(3,609)
Net income									(6,092)	(5,763)	(5,782)
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									(6,092)	(5,763)	(5,782)
Guarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues									4,984,356	4,213,776	3,950,509
Cost of revenues									4,000,112	3,276,078	3,098,048
Selling, general and administrative									558,686	481,943	457,808
Total									4,558,798	3,758,021	3,555,856
Income (loss) from operations									425,558	455,755	394,653
Other [Abstract]
Income (loss) from unconsolidated entities									16,913	14,034	40,588
Other income - net									27,873	34,098	40,594
Intercompany interest income
Interest Expense
Loss from subsidiaries									109,257	22,359	19,476
Income (loss) before income tax benefit									579,601	526,246	495,311
Income tax provision									203,614	203,296	190,349
Net income									375,987	322,950	304,962
Other Comprehensive Income (Loss), Net of Tax									31	18	202
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									376,018	322,968	305,164
Non-Guarantor Subsidiaries [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues									317,018	77,226	79,097
Cost of revenues									163,970	12,909	9,406
Selling, general and administrative									73,488	60,377	55,721
Total									237,458	73,286	65,127
Income (loss) from operations									79,560	3,940	13,970
Other [Abstract]
Income (loss) from unconsolidated entities									23,835	7,085	553
Other income - net									17,456	21,724	15,416
Intercompany interest income
Interest Expense									(2,203)	(999)	(1,072)
Loss from subsidiaries
Income (loss) before income tax benefit									118,648	31,750	28,867
Income tax provision									41,681	12,265	11,094
Net income									76,967	19,485	17,773
Other Comprehensive Income (Loss), Net of Tax											24
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									76,967	19,485	17,797
Eliminations [Member]
Supplemental Condensed Consolidating Statement of Operations
Revenues									(131,866)	(119,754)	(118,004)
Cost of revenues									(20,017)	(19,717)	(25,617)
Selling, general and administrative									(100,676)	(90,885)	(84,815)
Total									(120,693)	(110,602)	(110,432)
Income (loss) from operations									(11,173)	(9,152)	(7,572)
Other [Abstract]
Income (loss) from unconsolidated entities
Other income - net									3,388	2,322	779
Intercompany interest income									(145,828)	(137,362)	(148,177)
Interest Expense									153,613	144,192	154,970
Loss from subsidiaries									(688,858)	(548,605)	(514,787)
Income (loss) before income tax benefit									(688,858)	(548,605)	(514,787)
Income tax provision									(241,996)	(211,933)	(197,834)
Net income									(446,862)	(336,672)	(316,953)
Other Comprehensive Income (Loss), Net of Tax
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									$ (446,862)	$ (336,672)	$ (316,953)