Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Cost of sales:
Inventory impairments and land option cost write-offs					$ 4.7		$ 32.6
Gross profit:
Loss (gain) on early retirement of debt, net					(0.1)		10.7
Income (loss) before income taxes	72.2	[1]	28.9	[1]	143.7	[1]	(21.8)	[1]
Income tax expense (benefit)	(715.6)		0.2		(712.5)		(57.8)
Net income	787.8		28.7		856.2		36.0
Other comprehensive income (loss), net of income tax:
Unrealized loss related to available-for-sale securities	(0.1)		0		(0.1)		0
Comprehensive income	787.7		28.7		856.1		36.0
Basic net income per common share	$ 2.47		$ 0.09		$ 2.70		$ 0.11
Net income per common share assuming dilution	$ 2.22		$ 0.09		$ 2.47		$ 0.11
Cash dividends declared per common share	$ 0.0375		$ 0.0375		$ 0.1125		$ 0.1125
Homebuilding [Member]
Revenues:
Home sales	1,115.2		974.5		2,930.1		2,468.6
Land/lot sales	1.0		0.9		7.3		6.9
Total revenues	1,116.2		975.4		2,937.4		2,475.5
Cost of sales:
Home sales	914.6		813.5		2,417.3		2,069.9
Land/lot sales	0.8		0.7		4.0		6.7
Inventory impairments and land option cost write-offs	2.5		9.9		4.7		32.6
Total cost of sales	917.9		824.1		2,426.0		2,109.2
Gross profit:
Home sales	200.6		161.0		512.8		398.7
Land/lot sales	0.2		0.2		3.3		0.2
Inventory impairments and land option cost write-offs	(2.5)		(9.9)		(4.7)		(32.6)
Gross profit	198.3		151.3		511.4		366.3
Selling, general and administrative expense	136.4		113.7		382.9		355.8
Interest expense	6.2		10.1		18.7		41.0
Loss (gain) on early retirement of debt, net	0		6.5		(0.1)		10.7
Other (income)	(2.6)		(1.2)		(8.1)		(6.8)
Income (loss) before income taxes	58.3	[1]	22.2	[1]	118.0	[1]	(34.4)	[1]
Financial Services [Member]
Gross profit:
Revenues, net of recourse and reinsurance expense	33.8		23.8		80.4		63.0
General and administrative expense	21.5		19.3		59.9		56.4
Interest expense	0.6		0.3		2.4		0.7
Interest and other (income)	(2.2)		(2.5)		(7.6)		(6.7)
Income (loss) before income taxes	$ 13.9	[1]	$ 6.7	[1]	$ 25.7	[1]	$ 12.6	[1]

[1] Expenses maintained at the corporate level consist primarily of interest and property taxes, which are capitalized and amortized to cost of sales or expensed directly, and the expenses related to operating the Company’s corporate office. The amortization of capitalized interest and property taxes is allocated to each segment based on the segment’s revenue, while interest expense and those expenses associated with the corporate office are allocated to each segment based on the segment’s inventory balances.