Consolidated Statement Of Stockholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common stock	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income (loss)
Balance at Sep. 30, 2012	$ 328.2	$ 1.6	$ 1,584.4	$ (1,229.2)	$ (28.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1.1	0	0	1.1	0
Dividends declared	2.8	0	(2.8)	0	0
Stock-based compensation	2.4	0	2.4	0	0
Shares retained for employee taxes	(3.0)	0		0	0
Stock issued under stock compensation plans	0.9	0	0.9	0	0
Other Comprehensive Income (Loss), Net of Tax	(5.0)	0	0	0	(5.0)
Balance at Sep. 30, 2013	$ 321.8	$ 1.6	$ 1,581.9	$ (1,228.1)	$ (33.6)