Supplemental Guarantor Information (Level 4 BS) (Details 1) - USD ($) $ in Thousands	Jan. 31, 2017	Oct. 31, 2016	Jan. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
ASSETS
Cash and cash equivalents	$ 373,469	$ 633,715	$ 336,244	$ 918,993	$ 918,993
Restricted cash and investments	12,445	31,291
Inventory	7,539,974	7,353,967
Property, construction and office equipment, net	172,459	169,576
Receivables, prepaid expenses and other assets	512,974	582,758
Mortgage loans held for sale	85,765	248,601
Customer deposits held in escrow	58,012	53,057
Investments in and advances to unconsolidated entities	601,696	496,411
Investments in foreclosed real estate and distressed loans	0
Investments in and advances to consolidated entities	0	0
Deferred tax assets, net of valuation allowances	160,006	167,413
Total assets	9,516,800	9,736,789
Liabilities:
Loans payable	879,894	871,079
Senior notes	2,695,524	2,694,372
Mortgage company loan facility	57,040	210,000
Customer deposits	344,150	309,099
Accounts payable	258,694	281,955
Accrued expenses	940,102	1,072,300
Advances from Affiliiate	0	0
Income taxes payable	20,372	62,782
Total liabilities	5,195,776	5,501,587
Equity:
Common stock	1,779	1,779
Additional paid-in capital	718,861	728,464
Retained earnings	4,047,713	3,977,297
Treasury stock, at cost	(450,072)	(474,912)
Accumulated other comprehensive loss	(3,167)	(3,336)
Total stockholders' equity	4,315,114	4,229,292
Noncontrolling interest	5,910	5,910
Total equity	4,321,024	4,235,202
Total liabilities and stockholders' equity	9,516,800	9,736,789
Toll Brothers Inc. [Member]
ASSETS
Cash and cash equivalents	0	0	0	0	0
Restricted cash and investments	11,796	11,708
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	17	77
Mortgage loans held for sale
Customer deposits held in escrow
Investments in and advances to unconsolidated entities
Investments in foreclosed real estate and distressed loans
Investments in and advances to consolidated entities	4,163,667	4,112,876
Deferred tax assets, net of valuation allowances	160,006	167,413
Total assets	4,335,486	4,292,074
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses
Advances from Affiliiate
Income taxes payable	20,372	62,782
Total liabilities	20,372	62,782
Equity:
Common stock	1,779	1,779
Additional paid-in capital	718,861	728,464
Retained earnings	4,047,713	3,977,297
Treasury stock, at cost	(450,072)	(474,912)
Accumulated other comprehensive loss	(3,167)	(3,336)
Total stockholders' equity	4,315,114	4,229,292
Noncontrolling interest
Total equity	4,315,114	4,229,292
Total liabilities and stockholders' equity	4,335,486	4,292,074
Subsidiary Issuer [Member]
ASSETS
Cash and cash equivalents	0	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 and advances to unconsolidated entities
Investments in foreclosed real estate and distressed loans
Investments in and advances to consolidated entities	2,747,471	2,741,160
Deferred tax assets, net of valuation allowances
Total assets	2,747,471	2,741,160
Liabilities:
Loans payable
Senior notes	2,687,342	2,683,823
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	36,869	32,559
Advances from Affiliiate
Income taxes payable
Total liabilities	2,724,211	2,716,382
Equity:
Common stock
Additional paid-in capital	49,400	49,400
Retained earnings	(26,140)	(24,622)
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	23,260	24,778
Noncontrolling interest
Total equity	23,260	24,778
Total liabilities and stockholders' equity	2,747,471	2,741,160
Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	280,504	583,440	178,762	783,599	783,599
Restricted cash and investments
Inventory	7,244,287	6,896,205
Property, construction and office equipment, net	156,691	153,663
Receivables, prepaid expenses and other assets	353,100	319,319
Mortgage loans held for sale
Customer deposits held in escrow	57,663	50,079
Investments in and advances to unconsolidated entities	96,840	101,999
Investments in foreclosed real estate and distressed loans
Investments in and advances to consolidated entities	91,740	20,519
Deferred tax assets, net of valuation allowances
Total assets	8,280,825	8,125,224
Liabilities:
Loans payable	879,894	871,079
Senior notes
Mortgage company loan facility
Customer deposits	326,407	292,794
Accounts payable	256,323	280,107
Accrued expenses	585,661	610,958
Advances from Affiliiate	1,834,429	1,737,682
Income taxes payable
Total liabilities	3,882,714	3,792,620
Equity:
Common stock	48	48
Additional paid-in capital
Retained earnings	4,398,063	4,332,556
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	4,398,111	4,332,604
Noncontrolling interest
Total equity	4,398,111	4,332,604
Total liabilities and stockholders' equity	8,280,825	8,125,224
Nonguarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	92,965	50,275	157,482	135,394	135,394
Restricted cash and investments	649	19,583
Inventory	295,687	457,806
Property, construction and office equipment, net	15,768	15,913
Receivables, prepaid expenses and other assets	200,837	299,978
Mortgage loans held for sale	85,765	248,601
Customer deposits held in escrow	349	2,978
Investments in and advances to unconsolidated entities	504,856	394,412
Investments in foreclosed real estate and distressed loans
Investments in and advances to consolidated entities	166,492	90,671
Deferred tax assets, net of valuation allowances
Total assets	1,363,368	1,580,217
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility	57,040	210,000
Customer deposits	17,743	16,305
Accounts payable	2,371	1,848
Accrued expenses	367,776	469,527
Advances from Affiliiate	728,851	799,082
Income taxes payable
Total liabilities	1,173,781	1,496,762
Equity:
Common stock	3,006	3,006
Additional paid-in capital	93,734	6,734
Retained earnings	86,937	67,805
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	183,677	77,545
Noncontrolling interest	5,910	5,910
Total equity	189,587	83,455
Total liabilities and stockholders' equity	1,363,368	1,580,217
Eliminations [Member]
ASSETS
Cash and cash equivalents	0	0	$ 0	$ 0	$ 0
Restricted cash and investments
Inventory		(44)
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	(40,980)	(36,616)
Mortgage loans held for sale
Customer deposits held in escrow
Investments in and advances to unconsolidated entities
Investments in foreclosed real estate and distressed loans
Investments in and advances to consolidated entities	(7,169,370)	(6,965,226)
Deferred tax assets, net of valuation allowances
Total assets	(7,210,350)	(7,001,886)
Liabilities:
Loans payable
Senior notes	8,182	10,549
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	(50,204)	(40,744)
Advances from Affiliiate	(2,563,280)	(2,536,764)
Income taxes payable
Total liabilities	(2,605,302)	(2,566,959)
Equity:
Common stock	(3,054)	(3,054)
Additional paid-in capital	(143,134)	(56,134)
Retained earnings	(4,458,860)	(4,375,739)
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	(4,605,048)	(4,434,927)
Noncontrolling interest
Total equity	(4,605,048)	(4,434,927)
Total liabilities and stockholders' equity	$ (7,210,350)	$ (7,001,886)