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Concentration of Risk and Segment Data (Segment Assets) (Details) - USD ($) $ in Thousands | Aug. 31, 2019 | Aug. 31, 2018
--- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | $ 12,970,475 | $ 12,045,641
EMS |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | 4,353,465 | 3,456,866
DMS |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | 4,988,198 | 5,378,436
Other non-allocated assets |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | $ 3,628,812 | $ 3,210,339

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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