Interest - Schedule of Capitalized Interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]
Capitalized interest in inventory, beginning of period	$ 72,256	$ 45,501	$ 52,562	$ 38,190
Interest incurred	31,678	28,766	96,577	86,361
Interest expense not qualified for capitalization and included as other expense	(10,421)	(14,252)	(41,112)	(46,709)
Capitalized interest amortized to house construction and land sales expenses	(9,430)	(9,996)	(23,944)	(27,823)
Capitalized interest in inventory, end of period	$ 84,083	$ 50,019	$ 84,083	$ 50,019