Restructuring and Related Charges (Liability Activity) (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Restructuring Reserve [Roll Forward]
Restructuring related charges	$ 45,251	$ 6,025
Employee Severance and Benefit Costs
Restructuring Reserve [Roll Forward]
Restructuring related charges	18,781	5,179
Lease Costs
Restructuring Reserve [Roll Forward]
Restructuring related charges	239	9
Asset Write-off Costs
Restructuring Reserve [Roll Forward]
Restructuring related charges	16,316	$ 184
2020 Restructuring Plan
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	5,931
Restructuring related charges	35,601
Asset write-off charge and other non-cash activity	(16,417)
Cash payments	(8,331)
Balance as of end of period	16,784
2020 Restructuring Plan | Employee Severance and Benefit Costs
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	3,162
Restructuring related charges	18,781
Asset write-off charge and other non-cash activity	(100)
Cash payments	(7,624)
Balance as of end of period	14,219
2020 Restructuring Plan | Lease Costs
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	1,980
Restructuring related charges	239
Asset write-off charge and other non-cash activity	0
Cash payments	(158)
Balance as of end of period	2,061
2020 Restructuring Plan | Asset Write-off Costs
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	0
Restructuring related charges	16,316
Asset write-off charge and other non-cash activity	(16,316)
Cash payments	0
Balance as of end of period	0
2020 Restructuring Plan | Other Related Costs
Restructuring Reserve [Roll Forward]
Balance as of beginning of period	789
Restructuring related charges	265
Asset write-off charge and other non-cash activity	(1)
Cash payments	(549)
Balance as of end of period	$ 504