Restructuring Charges and Other Exit-Related Activities Restructuring Reserve Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016
Restructuring Reserve [Roll Forward]
Charges	$ 113	$ 3,232	$ 137	$ 5,128
Total charges to date	14,334		14,334
Total expected charges	14,465		14,465
Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			2,077
Charges	64	3,197	0	5,003
Payments and Other			(861)
Restructuring reserve, ending balance	1,216		1,216
Total charges to date	14,334		14,334
Total expected charges	14,465		14,465
Severance costs
Restructuring Reserve [Roll Forward]
Charges	3	3,185	(59)	4,346
Total charges to date	10,216		10,216
Total expected charges	10,246		10,246
Severance costs | Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			918
Charges	3	3,185	(59)	4,346
Payments and Other			(609)
Restructuring reserve, ending balance	250		250
Contract termination costs
Restructuring Reserve [Roll Forward]
Charges	110	47	196	782
Total charges to date	2,069		2,069
Total expected charges	2,170		2,170
Contract termination costs | Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			1,159
Charges	61	12	59	657
Payments and Other			(252)
Restructuring reserve, ending balance	966		966
Other restructuring costs
Restructuring Reserve [Roll Forward]
Charges	0	0	0	0
Total charges to date	2,049		2,049
Total expected charges	2,049		2,049
Other restructuring costs | Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			0
Charges	0	$ 0	0	$ 0
Payments and Other			0
Restructuring reserve, ending balance	$ 0		$ 0