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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017
Allowances for Doubtful Accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | $ 221,813 | $ 225,726 | $ 163,644
Additions: Charged to Costs and Expenses | 57,380 | 2,748 | 191,581
Deductions: Write-offs, Net of Recoveries | (102,388) | (6,661) | (129,499)
Balance at End of Year | 176,805 | 221,813 | 225,726
Valuation Allowance for Deferred Tax Assets |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 230,374 | 289,083 | 213,583
Additions: Charged to Costs and Expenses | 41,260 | 61,854 | 115,893
Deductions: Write-offs, Net of Recoveries | (25,290) | (120,563) | (40,393)
Balance at End of Year | 246,344 | 230,374 | 289,083
Reserve for Supplier Advance Payments |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 110,613 | 130,705 |
Additions: Charged to Costs and Expenses | 0 | 0 |
Deductions: Write-offs, Net of Recoveries | (44,728) | (20,092) |
Balance at End of Year | $ 65,885 | $ 110,613 | $ 130,705

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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