Share-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended			9 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Stock Options [Member]	Jun. 30, 2013 Restricted Stock [Member]	Jun. 30, 2013 Restricted Stock [Member] Minimum [Member]	Jun. 30, 2013 Restricted Stock [Member] Maximum [Member]	Dec. 07, 2012 2013 Long-Term Incentive Plan [Member]	Jun. 30, 2013 2007 Long-Term Incentive Plan [Member]	Jun. 30, 2013 2001 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, stock options	$ 4.3
Unrecognized compensation cost, restricted stock awards			$ 18.7
Weighted average recognition period	2 years
Number of shares authorized						2,200,000	4,000,000	4,000,000
Outstanding options, maximum term		10 years
Employee, vesting period				3 years	4 years
Employee, restriction period				3 years	4 years
Non-employee directors, award vesting period				13 months
Non-employee directors, award recognition period				13 months