Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Sep. 30, 2011

Quarterly Results of Operations (Unaudited) [Abstract]

Summary of quarterly results of operations

	Fiscal 2011
	Three Months Ended
	September 30			June 30		March 31			December 31
Revenues	$	1,098.3		$	999.2	$	751.1		$	788.2
Gross profit		160.0			151.3		104.8			110.2
Income (loss) before income taxes		33.8			28.9		(30.8	)		(19.9	)
Income tax (benefit) expense		(1.9	)		0.2		(58.6	)		0.5
Net income (loss)		35.7			28.7		27.8			(20.4	)
Basic net income (loss) per common share		0.11			0.09		0.09			(0.06	)
Diluted net income (loss) per common share		0.11			0.09		0.09			(0.06	)

	Fiscal 2010
	Three Months Ended
	September 30			June 30			March 31		December 31
Revenues	$	948.4		$	1,406.1		$	913.5	$	1,132.2
Gross profit		127.8			206.8			159.2		188.3
Income (loss) before income taxes		(1.7	)		46.3			12.1		42.8
Income tax expense (benefit)		7.2			(4.2	)		0.7		(149.2	)
Net income (loss)		(8.9	)		50.5			11.4		192.0
Basic net income (loss) per common share		(0.03	)		0.16			0.04		0.60
Diluted net income (loss) per common share		(0.03	)		0.16			0.04		0.56