Restructuring Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 26,370	$ 19,529	$ 4,461
Restructuring charges	43,409	28,406	52,197
Cash disbursements	(53,588)	(20,575)	(37,199)
Foreign currency impact	(937)	(990)	70
Balance, end of period	15,254	26,370	19,529
Employee Severance And Related Benefits
Restructuring Reserve [Roll Forward]
Balance, beginning of period	25,835	19,234	3,798
Restructuring charges	41,997	27,918	50,874
Cash disbursements	(52,882)	(20,334)	(35,510)
Foreign currency impact	(864)	(983)	72
Balance, end of period	14,086	25,835	19,234
Facility Closures and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	535	295	663
Restructuring charges	1,412	488	1,323
Cash disbursements	(706)	(241)	(1,689)
Foreign currency impact	(73)	(7)	(2)
Balance, end of period	$ 1,168	$ 535	$ 295