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Concentration of Risk and Segment Data (Segment Assets) (Details 4) - USD ($) $ in Thousands | Nov. 30, 2017 | Aug. 31, 2017
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Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | $ 11,519,565 | $ 11,095,995
EMS [Member] | Operating Segments [Member] |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | 3,156,266 | 2,778,820
DMS [Member] | Operating Segments [Member] |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | 5,490,658 | 5,290,468
Other non-allocated assets | Operating Segments [Member] |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Assets | $ 2,872,641 | $ 3,026,707

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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://www.xbrl.org/2003/role/presentationRef -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=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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