Restructuring Charges and Other Exit-Related Costs Restructuring Reserve Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2016	Nov. 30, 2015
Restructuring Reserve [Roll Forward]
Charges	$ 24	$ 1,896
Total charges to date	14,270
Total expected charges	14,400
Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	2,077
Charges	(64)	1,806
Payments and Other	(586)
Restructuring reserve, ending balance	1,427
Total charges to date	14,270
Total expected charges	14,400
Severance costs
Restructuring Reserve [Roll Forward]
Charges	(62)	1,161
Total charges to date	10,213
Total expected charges	10,213
Severance costs | Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	918
Charges	(62)	1,161
Payments and Other	(427)
Restructuring reserve, ending balance	429
Contract termination costs
Restructuring Reserve [Roll Forward]
Charges	86	735
Total charges to date	2,008
Total expected charges	2,138
Contract termination costs | Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1,159
Charges	(2)	645
Payments and Other	(159)
Restructuring reserve, ending balance	998
Other restructuring costs
Restructuring Reserve [Roll Forward]
Charges	0	0
Total charges to date	2,049
Total expected charges	2,049
Other restructuring costs | Q2’15 Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Charges	0	$ 0
Payments and Other	0
Restructuring reserve, ending balance	$ 0