Supplemental Guarantor Information (Level 4 BS) (Details 1) - USD ($) $ in Thousands	Jul. 31, 2015	Apr. 30, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Oct. 31, 2013
ASSETS
Cash and cash equivalents	$ 394,808		$ 586,315	$ 374,649		$ 772,972
Marketable securities	10,008		12,026
Restricted cash	17,920		18,342
Inventory	6,990,878		6,490,321
Property, construction and office equipment, net	138,597		143,010
Receivables, prepaid expenses and other assets	275,759		251,572
Mortgage loans held for sale	127,405		101,944
Customer deposits held in escrow	48,296		42,073
Investments in and advances to unconsolidated entities	334,925		447,078
Investments in foreclosed real estate and distressed loans	59,459		73,800
Investments in and advances to consolidated entities	0		0
Deferred tax assets, net of valuation allowances	232,840		250,421
Total assets	8,630,895		8,416,902
Liabilities:
Loans payable	866,876		654,261
Senior notes	2,356,068		2,655,044
Mortgage company loan facility	100,000		90,281
Customer deposits	299,611		223,799
Accounts payable	242,770		225,347
Accrued expenses	579,268		581,477
Advances from Affiliiate	0		0
Income taxes payable	60,316		125,996
Total liabilities	4,504,909		4,556,205
Equity:
Common stock	1,779		1,779
Additional paid-in capital	728,501		712,162
Retained earnings	3,448,039		3,232,035
Treasury stock, at cost	(54,438)		(88,762)
Accumulated other comprehensive loss	(2,900)	$ (3,051)	(2,838)	(2,050)	$ (2,030)	(2,387)
Total stockholders' equity	4,120,981		3,854,376
Noncontrolling interest	5,005		6,321
Total equity	4,125,986		3,860,697
Total liabilities and stockholders' equity	8,630,895		8,416,902
Toll Brothers Inc. [Member]
ASSETS
Cash and cash equivalents	$ 0		$ 0	0		0
Marketable securities
Restricted cash	$ 15,176		$ 15,211
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	$ 96
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	$ 3,933,234		$ 3,714,788
Deferred tax assets, net of valuation allowances	232,840		250,421
Total assets	$ 4,181,346		$ 3,980,420
Liabilities:
Loans payable
Senior notes
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses
Advances from Affiliiate
Income taxes payable	$ 60,316		$ 125,996
Total liabilities	60,316		125,996
Equity:
Common stock	1,779		1,779
Additional paid-in capital	728,501		712,162
Retained earnings	3,448,039		3,232,035
Treasury stock, at cost	(54,438)		(88,762)
Accumulated other comprehensive loss	(2,851)		(2,790)
Total stockholders' equity	$ 4,121,030		$ 3,854,424
Noncontrolling interest
Total equity	$ 4,121,030		$ 3,854,424
Total liabilities and stockholders' equity	4,181,346		3,980,420
Subsidiary Issuer [Member]
ASSETS
Cash and cash equivalents	$ 0		$ 0	0		0
Marketable securities
Restricted cash
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	$ 14,165		$ 16,802
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	$ 2,385,178		$ 2,677,448
Deferred tax assets, net of valuation allowances
Total assets	$ 2,399,343		$ 2,694,250
Liabilities:
Loans payable
Senior notes	$ 2,333,761		$ 2,625,712
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	$ 33,316		$ 31,906
Advances from Affiliiate
Income taxes payable
Total liabilities	$ 2,367,077		$ 2,657,618
Equity:
Common stock
Additional paid-in capital	$ 49,400		$ 49,400
Retained earnings	$ (17,134)		$ (12,768)
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	$ 32,266		$ 36,632
Noncontrolling interest
Total equity	$ 32,266		$ 36,632
Total liabilities and stockholders' equity	2,399,343		2,694,250
Guarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	$ 264,661		455,714	254,510		670,102
Marketable securities			1,997
Restricted cash	$ 1,295		2,070
Inventory	6,514,285		6,260,303
Property, construction and office equipment, net	122,704		126,586
Receivables, prepaid expenses and other assets	$ 172,371		$ 114,863
Mortgage loans held for sale
Customer deposits held in escrow	$ 46,748		$ 39,912
Investments in and advances to unconsolidated entities	$ 117,890		$ 132,096
Investments in foreclosed real estate and distressed loans
Investments in and advances to consolidated entities	$ 4,740		$ 4,740
Deferred tax assets, net of valuation allowances
Total assets	$ 7,244,694		$ 7,138,281
Liabilities:
Loans payable	$ 866,876		$ 653,269
Senior notes
Mortgage company loan facility
Customer deposits	$ 287,588		$ 221,084
Accounts payable	242,439		225,106
Accrued expenses	366,699		386,223
Advances from Affiliiate	$ 1,654,104		$ 2,018,981
Income taxes payable
Total liabilities	$ 3,417,706		$ 3,504,663
Equity:
Common stock	$ 48		$ 48
Additional paid-in capital
Retained earnings	$ 3,826,989		$ 3,633,618
Treasury stock, at cost
Accumulated other comprehensive loss	$ (49)		$ (48)
Total stockholders' equity	$ 3,826,988		$ 3,633,618
Noncontrolling interest
Total equity	$ 3,826,988		$ 3,633,618
Total liabilities and stockholders' equity	7,244,694		7,138,281
Nonguarantor Subsidiaries [Member]
ASSETS
Cash and cash equivalents	130,147		130,601	120,139		102,870
Marketable securities	10,008		10,029
Restricted cash	1,449		1,061
Inventory	476,593		230,018
Property, construction and office equipment, net	15,893		16,424
Receivables, prepaid expenses and other assets	124,971		137,496
Mortgage loans held for sale	127,405		101,944
Customer deposits held in escrow	1,548		2,161
Investments in and advances to unconsolidated entities	217,035		314,982
Investments in foreclosed real estate and distressed loans	$ 59,459		$ 73,800
Investments in and advances to consolidated entities
Deferred tax assets, net of valuation allowances
Total assets	$ 1,164,508		$ 1,018,516
Liabilities:
Loans payable			$ 992
Senior notes
Mortgage company loan facility	$ 100,000		$ 90,281
Customer deposits	12,023		2,715
Accounts payable	331		241
Accrued expenses	217,141		181,649
Advances from Affiliiate	$ 786,914		$ 708,167
Income taxes payable
Total liabilities	$ 1,116,409		$ 984,045
Equity:
Common stock	3,006		3,006
Additional paid-in capital	1,734		1,734
Retained earnings	$ 38,354		$ 23,410
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	$ 43,094		$ 28,150
Noncontrolling interest	5,005		6,321
Total equity	48,099		34,471
Total liabilities and stockholders' equity	1,164,508		1,018,516
Eliminations [Member]
ASSETS
Cash and cash equivalents	$ 0		$ 0	$ 0		$ 0
Marketable securities
Restricted cash
Inventory
Property, construction and office equipment, net
Receivables, prepaid expenses and other assets	$ (35,844)		$ (17,589)
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	$ (6,323,152)		$ (6,396,976)
Deferred tax assets, net of valuation allowances
Total assets	$ (6,358,996)		$ (6,414,565)
Liabilities:
Loans payable
Senior notes	$ 22,307		$ 29,332
Mortgage company loan facility
Customer deposits
Accounts payable
Accrued expenses	$ (37,888)		$ (18,301)
Advances from Affiliiate	$ (2,441,018)		$ (2,727,148)
Income taxes payable
Total liabilities	$ (2,456,599)		$ (2,716,117)
Equity:
Common stock	(3,054)		(3,054)
Additional paid-in capital	(51,134)		(51,134)
Retained earnings	$ (3,848,209)		$ (3,644,260)
Treasury stock, at cost
Accumulated other comprehensive loss
Total stockholders' equity	$ (3,902,397)		$ (3,698,448)
Noncontrolling interest
Total equity	$ (3,902,397)		$ (3,698,448)
Total liabilities and stockholders' equity	$ (6,358,996)		$ (6,414,565)