Accounts Receivable-Net (Tables)

12 Months Ended

Sep. 30, 2012

Accounts Receivable-Net

Schedule of net accounts receivable

	Fiscal Year Ended
	September 30, 2012			September 30, 2011
	(in millions)
Billed	$	1,207.0		$	1,256.3
Unbilled		1,145.1			1,133.6
Contract retentions		156.6			110.5
Total accounts receivable—gross		2,508.7			2,500.4
Allowance for doubtful accounts		(112.8	)		(120.2	)
Total accounts receivable—net	$	2,395.9		$	2,380.2