Segment Information (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013 segments	Sep. 30, 2012
Segment Reporting [Abstract]
Restructuring charges	$ 28,406	$ 52,197	$ 24,928
Number of operating and reportable segments		2
Software Products [Member]
Segment Reporting [Abstract]
Restructuring charges	2,800	17,700	4,100
Services [Member]
Segment Reporting [Abstract]
Restructuring charges	9,800	11,300	4,000
General And Administrative [Member]
Segment Reporting [Abstract]
Restructuring charges	1,800	5,100	1,600
Selling and Marketing Expense [Member]
Segment Reporting [Abstract]
Restructuring charges	$ 13,900	$ 18,100	$ 15,200