Income Taxes (Tables)

12 Months Ended

Sep. 30, 2011

Income Taxes [Abstract]

Components of income tax expense (benefit)

	Year Ended September 30,
	2011			2010			2009
	(In millions)
Current tax expense (benefit):
Federal	$	(53.6	)	$	(153.1	)	$	(213.9	)
State		(6.1	)		7.5			(6.6	)
		(59.7	)		(145.6	)		(220.5	)
Deferred tax expense:
Federal		—			—			200.7
State		—			—			12.8
		—			—			213.5
Total income tax benefit	$	(59.7	)	$	(145.6	)	$	(7.0	)

Comparison of income tax expense (benefit) and tax computed at the statutory rate

	Year Ended September 30,
	2011			2010			2009
	(In millions)
Income taxes at federal statutory rate	$	4.2		$	34.8		$	(194.9	)
Increase (decrease) in tax resulting from:
State income taxes, net of federal benefit		2.4			9.8			(13.0	)
Domestic production activities deduction		—			(6.2	)		8.1
Uncertain tax positions, net of deferred tax		(11.2	)		13.5			—
Valuation allowance		(54.1	)		(170.6	)		164.8
Tax credits		(2.2	)		(30.0	)		30.0
Other		1.2			3.1			(2.0	)
Total income tax benefit	$	(59.7	)	$	(145.6	)	$	(7.0	)

Components of deferred tax assets and liabilities

	September 30,
	2011			2010
	(In millions)
Deferred tax assets:
Inventory costs	$	66.3		$	105.6
Inventory impairments		387.3			449.2
Warranty and construction defect costs		111.4			107.2
Net operating loss carryforwards		238.2			183.6
Tax credit carryforwards		3.2			1.0
Incentive compensation plans		51.4			45.9
Deferral of profit on home sales		0.6			0.8
Goodwill impairment		3.4			8.9
Other		34.3			48.1
Total deferred tax assets		896.1			950.3
Valuation allowance		(848.5	)		(902.6	)
Total deferred tax assets, net of valuation allowance		47.6			47.7
Deferred tax liabilities		47.6			47.7
Deferred income taxes, net	$	—		$	—

Rollforward of unrecognized tax benefits

	Year Ended September 30,
	2011			2010			2009
	(In millions)
Unrecognized tax benefits, beginning of year	$	65.0		$	17.8		$	13.8
Additions attributable to tax positions taken in the current year		—			—			—
Additions attributable to tax positions taken in prior years		—			49.8			7.1
Reductions attributable to tax positions taken in prior years		(48.7	)		(2.6	)		(3.1	)
Settlements		—			—			—
Unrecognized tax benefits, end of year	$	16.3		$	65.0		$	17.8