Condensed Consolidated Statement Of Stockholders' Equity (Unaudited) (USD $) In Millions, unless otherwise specified	Total	Common stock	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive loss
Beginning Balance at Sep. 30, 2012	$ 231.2	$ 1.6	$ 1,587.3	$ (1,270.0)	$ (87.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	13.2			13.2
Dividends declared	(5.5)		(5.5)
Stock-based compensation	3.9		3.9
Shares retained for employee taxes	(1.5)	0	(1.5)	0	0
Stock issued under stock compensation plans	1.1	0	1.1	0	0
Foreign currency translation	(1.8)				(1.8)
Minimum pension liability	5.6				5.6
Ending Balance at Mar. 31, 2013	$ 246.2	$ 1.6	$ 1,585.3	$ (1,256.8)	$ (83.9)