Supplemental Guarantor Information (Level 4 BS) (Details 1) - USD ($) $ in Thousands	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
ASSETS
Cash and cash equivalents	$ 712,829	$ 633,715	$ 918,993	$ 586,315
Restricted Cash and Investments	2,482	31,291
Inventory	7,281,453	7,353,967
Property, construction and office equipment, net	189,547	169,576
Receivables, prepaid expenses, and other assets	542,217	582,758
Mortgage loans held for sale	132,922	248,601
Customer deposits held in escrow	102,017	53,057
Investments in unconsolidated entities	481,758	496,411
Investments in and Advances to Affiliates, Amount of Equity	0	0
Deferred tax assets, net of valuation allowances		167,413
Total assets	9,445,225	9,736,789
Liabilities:
Loans payable	637,416	871,079
Senior notes	2,462,463	2,694,372
Mortgage company loan facility	120,145	210,000
Customer deposits	396,026	309,099
Accounts payable	275,223	281,955
Accrued expenses	959,353	1,072,300
Advances from Affiliiate	0	0
Income taxes payable	57,509	62,782
Total liabilities	4,908,135	5,501,587
Stockholders’ equity:
Common stock	1,779	1,779
Additional paid-in capital	720,115	728,464
Retained earnings	4,474,064	3,977,297
Treasury stock, at cost -- 20,732 shares and 16,154 shares at October 31, 2017 and October 31, 2016, respectively	(662,854)	(474,912)
Accumulated other comprehensive loss	(1,910)	(3,336)	(2,509)	(2,838)
Total stockholders' equity	4,531,194	4,229,292
Noncontrolling interest	5,896	5,910
Total equity	4,537,090	4,235,202	4,228,079	3,860,697
Total liabilities and stockholders' equity	9,445,225	9,736,789
Toll Brothers Inc. [Member]
ASSETS
Cash and cash equivalents	0	0	0	0
Restricted Cash and Investments		11,708
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses, and other assets		77
Mortgage loans held for sale
Customer deposits held in escrow
Investments in unconsolidated entities
Investments in and Advances to Affiliates, Amount of Equity	4,589,228	4,112,876
Deferred tax assets, net of valuation allowances		167,413
Total assets	4,589,228	4,292,074
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	141
Advances from Affiliiate
Income taxes payable	57,893	62,782
Total liabilities	58,034	62,782
Stockholders’ equity:
Common stock	1,779	1,779
Additional paid-in capital	720,115	728,464
Retained earnings	4,474,064	3,977,297
Treasury stock, at cost -- 20,732 shares and 16,154 shares at October 31, 2017 and October 31, 2016, respectively	(662,854)	(474,912)
Accumulated other comprehensive loss	(1,910)	(3,336)
Total stockholders' equity	4,531,194	4,229,292
Noncontrolling interest
Total equity	4,531,194	4,229,292
Total liabilities and stockholders' equity	4,589,228	4,292,074
Subsidiary Issuer [Member]
ASSETS
Cash and cash equivalents	0	0	0	0
Restricted Cash and Investments
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 unconsolidated entities
Investments in and Advances to Affiliates, Amount of Equity	2,514,649	2,741,160
Deferred tax assets, net of valuation allowances
Total assets	2,514,649	2,741,160
Liabilities:
Loans payable
Senior notes	2,462,463	2,683,823
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	34,345	32,559
Advances from Affiliiate
Income taxes payable
Total liabilities	2,496,808	2,716,382
Stockholders’ equity:
Common stock
Additional paid-in capital	49,400	49,400
Retained earnings	(31,559)	(24,622)
Treasury stock, at cost -- 20,732 shares and 16,154 shares at October 31, 2017 and October 31, 2016, respectively
Accumulated other comprehensive loss
Total stockholders' equity	17,841	24,778
Noncontrolling interest
Total equity	17,841	24,778
Total liabilities and stockholders' equity	2,514,649	2,741,160
Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	533,204	583,440	783,599	455,714
Restricted Cash and Investments	1,500
Inventory	7,017,331	6,787,498
Property, construction and office equipment, net	165,464	153,663
Receivables, prepaid expenses, and other assets	319,592	319,180
Mortgage loans held for sale
Customer deposits held in escrow	96,956	50,079
Investments in unconsolidated entities	66,897	101,999
Investments in and Advances to Affiliates, Amount of Equity	91,740	20,519
Deferred tax assets, net of valuation allowances
Total assets	8,292,684	8,016,378
Liabilities:
Loans payable	637,416	871,079
Senior notes
Mortgage company loan facility
Customer deposits	377,083	292,794
Accounts payable	271,617	280,107
Accrued expenses	563,577	610,932
Advances from Affiliiate	1,584,957	1,628,549
Income taxes payable
Total liabilities	3,434,650	3,683,461
Stockholders’ equity:
Common stock	48	48
Additional paid-in capital
Retained earnings	4,857,986	4,332,869
Treasury stock, at cost -- 20,732 shares and 16,154 shares at October 31, 2017 and October 31, 2016, respectively
Accumulated other comprehensive loss
Total stockholders' equity	4,858,034	4,332,917
Noncontrolling interest
Total equity	4,858,034	4,332,917
Total liabilities and stockholders' equity	8,292,684	8,016,378
Non-Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	179,625	50,275	135,394	130,601
Restricted Cash and Investments	982	19,583
Inventory	264,122	566,513
Property, construction and office equipment, net	24,083	15,913
Receivables, prepaid expenses, and other assets	296,699	300,117
Mortgage loans held for sale	132,922	248,601
Customer deposits held in escrow	5,061	2,978
Investments in unconsolidated entities	414,861	394,412
Investments in and Advances to Affiliates, Amount of Equity	126,799	90,671
Deferred tax assets, net of valuation allowances
Total assets	1,445,154	1,689,063
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility	120,145	210,000
Customer deposits	18,943	16,305
Accounts payable	3,606	1,848
Accrued expenses	440,631	469,553
Advances from Affiliiate	659,904	908,215
Income taxes payable	(384)
Total liabilities	1,242,845	1,605,921
Stockholders’ equity:
Common stock	3,006	3,006
Additional paid-in capital	93,734	6,734
Retained earnings	99,673	67,492
Treasury stock, at cost -- 20,732 shares and 16,154 shares at October 31, 2017 and October 31, 2016, respectively
Accumulated other comprehensive loss
Total stockholders' equity	196,413	77,232
Noncontrolling interest	5,896	5,910
Total equity	202,309	83,142
Total liabilities and stockholders' equity	1,445,154	1,689,063
Eliminations [Member]
ASSETS
Cash and cash equivalents	0	0	$ 0	$ 0
Restricted Cash and Investments
Inventory		(44)
Property, construction and office equipment, net
Receivables, prepaid expenses, and other assets	(74,074)	(36,616)
Mortgage loans held for sale
Customer deposits held in escrow
Investments in unconsolidated entities
Investments in and Advances to Affiliates, Amount of Equity	(7,322,416)	(6,965,226)
Deferred tax assets, net of valuation allowances
Total assets	(7,396,490)	(7,001,886)
Liabilities:
Loans payable
Senior notes		10,549
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	(79,341)	(40,744)
Advances from Affiliiate	(2,244,861)	(2,536,764)
Income taxes payable
Total liabilities	(2,324,202)	(2,566,959)
Stockholders’ equity:
Common stock	(3,054)	(3,054)
Additional paid-in capital	(143,134)	(56,134)
Retained earnings	(4,926,100)	(4,375,739)
Treasury stock, at cost -- 20,732 shares and 16,154 shares at October 31, 2017 and October 31, 2016, respectively
Accumulated other comprehensive loss
Total stockholders' equity	(5,072,288)	(4,434,927)
Noncontrolling interest
Total equity	(5,072,288)	(4,434,927)
Total liabilities and stockholders' equity	$ (7,396,490)	$ (7,001,886)