Restructuring and Related Charges (Cumulative Charges) (Details) - 2017 Restructuring Plan $ in Thousands	Aug. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	$ 186,414
EMS
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	56,800
DMS
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	99,000
Unallocated costs
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	30,600
Employee severance and benefit costs
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	64,420
Lease costs
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	5,562
Asset write-off costs
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	110,540
Other related costs
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring and related charges	$ 5,892