Contingencies, Significant Estimates and Concentrations (Tables)

12 Months Ended

Sep. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of significant portion of revenues from the Department of Defense

The Company derived a significant portion of its revenue from the DoD, as follows (in millions): 

	Fiscal Year Ended September 30,
	2015		2014		2013
DoD	$	922.1	$	1,603.7	$	2,782.1
Foreign military sales	0.3		28.0		4.1
Total DoD sales	$	922.4	$	1,631.7	$	2,786.2