Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 4,461	$ 666	$ 1,165
Restructuring charges	52,197	24,928	0
Cash disbursements	(37,199)	(20,947)	(502)
Foreign currency impact	70	(186)	3
Balance, end of period	19,529	4,461	666
Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	4,461	666	1,165
Restructuring charges	(251)
Cash disbursements	(4,225)	(20,947)	(502)
Foreign currency impact	15	(186)	3
Balance, end of period	0	4,461	666
Employee Severance And Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0	0	0
Restructuring charges	50,954
Cash disbursements	(31,781)	0	0
Foreign currency impact	60	0	0
Balance, end of period	19,233	0	0
Facility Closures and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0	0	0
Restructuring charges	1,494
Cash disbursements	(1,193)	0	0
Foreign currency impact	(5)	0	0
Balance, end of period	$ 296	$ 0	$ 0