Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Gross profit:
Income (loss) before income taxes	$ 220.7	[1]	$ 189.7	[1]
Income tax expense (benefit)	78.2		66.5
Net income	142.5		123.2
Other comprehensive income (loss), net of income tax:
Comprehensive income	142.5		123.2
Basic net income per common share (in dollars per share)	$ 0.39		$ 0.38
Net income per common share assuming dilution (in dollars per share)	$ 0.39		$ 0.36
Cash dividends declared per common share (in dollars per share)	$ 0.0625		$ 0.0000
Homebuilding [Member]
Revenues:
Home sales	2,240.7		1,630.8
Land/lot sales	12.3		4.8
Total revenues	2,253.0		1,635.6
Cost of sales:
Home sales	1,798.1		1,266.7
Land/lot sales	10.3		4.3
Inventory impairments and land option cost write-offs	6.0		2.6
Total cost of sales	1,814.4		1,273.6
Gross profit:
Home sales	442.6		364.1
Land/lot sales	2.0		0.5
Inventory impairments and land option cost write-offs	(6.0)		(2.6)
Gross profit	438.6		362.0
Selling, general and administrative expense	238.0		183.4
Other (income)	(5.5)		(3.3)
Income (loss) before income taxes	206.1	[1]	181.9	[1]
Financial Services [Member]
Gross profit:
Financial Services Revenue	49.6		35.0
General and administrative expense	37.8		29.8
Interest and other (income)	(2.8)		(2.6)
Income (loss) before income taxes	$ 14.6	[1]	$ 7.8	[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 those expenses associated with the corporate office are allocated to each segment based on the segment’s inventory balances.