Supplemental Guarantor Information (Details Textual) (USD $) In Millions, unless otherwise specified	Jan. 31, 2012 Senior Notes Due 2012 [Member]	Nov. 22, 2002 Senior Notes Due 2012 [Member]	Jan. 31, 2012 Senior Notes Due 2013 [Member]	Sep. 03, 2003 Senior Notes Due 2013 [Member]	Jan. 31, 2012 Senior Notes Due 2014 [Member]	Mar. 16, 2004 Senior Notes Due 2014 [Member]	Jun. 02, 2005 Senior Notes Due 2015 [Member]	Apr. 13, 2009 Senior Notes Due 2017 [Member]	Sep. 22, 2009 Senior Notes Due 2019 [Member]	Jan. 31, 2012 Subsidiary Issuer [Member]	Jan. 31, 2012 Guarantor Subsidiaries [Member]
Supplemental Guarantor Information (Textual) [Abstract]
Subsidiary of the Company, Toll Brothers Finance Corp.										100.00%	100.00%
Issued Senior Notes		$ 300		$ 250		$ 300	$ 300	$ 400	$ 250
Interest rate on notes	6.875%	6.875%	5.95%	5.95%	4.95%	4.95%	5.15%	8.91%	6.75%
Redemption of Senior Notes	$ 160.2		$ 108.4		$ 32.0