Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 19,529	$ 4,461	$ 666
Restructuring charges	28,406	52,197	24,928
Cash disbursements	(20,575)	(37,199)	(20,947)
Foreign currency impact	(990)	70	(186)
Balance, end of period	26,370	19,529	4,461
Employee Severance And Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	19,234	3,798	0
Restructuring charges	27,918	50,874	24,391
Cash disbursements	(20,334)	(35,510)	(20,401)
Foreign currency impact	(983)	72	(192)
Balance, end of period	25,835	19,234	3,798
Facility Closures and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	295	663	666
Restructuring charges	488	1,323	537
Cash disbursements	(241)	(1,689)	(546)
Foreign currency impact	(7)	(2)	6
Balance, end of period	$ 535	$ 295	$ 663