Discontinued Operations and Restructuring - Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Restructuring Reserve [Roll Forward]
Charged to expense	$ 17,100	$ 6,700
Cash payments			$ (5,376)	$ 0	$ 0
Restructuring Plan 2015 [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			0
Charged to expense			9,469
Cash payments			(1,393)
Restructuring reserve, end balance	8,076	0	8,076	0
Restructuring Plan 2015 [Member] | Lease Termination Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, end balance	7,600		7,600
Restructuring Plan 2014 [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			6,121	0
Charged to expense			763	6,664
Cash payments			(3,983)	(543)
Restructuring reserve, end balance	$ 2,901	$ 6,121	$ 2,901	$ 6,121	$ 0