Discontinued Operations and Restructuring - Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Restructuring Reserve [Roll Forward]
Charged to expense	$ 11,800	$ 17,100
Cash payments			$ (8,478)	$ (5,376)	$ 0
Disposed of by Sale | Restructuring Plan 2015
Restructuring Reserve [Roll Forward]
Beginning balance			8,076	0
Charged to expense			1,594	9,469
Cash payments			(5,577)	(1,393)
Other			1,024	0
Ending balance	$ 5,117	8,076	5,117	8,076	0
Disposed of by Sale | Restructuring Plan 2014
Restructuring Reserve [Roll Forward]
Beginning balance			$ 0	2,901	6,121
Charged to expense				0	763
Cash payments				(2,901)	(3,983)
Ending balance		$ 0		$ 0	$ 2,901