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INCOME TAX (Reconciliation of Federal Statutory Rate to Effective Tax Rate from Continuing Operations) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017
Income Tax Contingency [Line Items] |  |  |
Federal statutory tax rate (percent) | 21.00% | 25.70% | 35.00%
Income tax expense at statutory rate | $ 56,377 | $ 42,471 | $ 22,908
TCJA - Toll charge and related foreign tax credits | 7,410 | 29,466 | 0
TCJA - Remeasurement of deferred tax balances | (586) | (25,515) | 0
Foreign tax impairment on valuation of subsidiaries (1) | (29,697) | 22,315 | (92,321)
Gain on international restructure (1) | 0 | 18,926 | 0
Change in valuation allowance | 36,167 | (20,839) | 113,135
Nontaxable foreign interest (1) | (9,799) | (17,414) | (19,259)
Worthless stock deduction (2) | 0 | (6,084) | 0
Foreign rate differential (3) | (1,466) | (5,973) | (7,518)
Research and experimentation credits | 580 | 4,707 | 1,034
Audit settlement (4) | 120 | (3,187) | (659)
State and local taxes | 6,085 | 2,317 | 1,490
Deferred compensation (5) | (395) | (2,036) | (2,101)
Section 199 manufacturing deduction | 0 | 0 | (1,407)
Other | 6,045 | 407 | 2,042
Income tax expense on continuing operations | $ 69,681 | $ 30,147 | $ 15,276
Effective income tax rate from continuing operations | 26.00% | 18.20% | 23.30%
Poland |  |  |
Income Tax Contingency [Line Items] |  |  |
Federal statutory tax rate (percent) | 19.00% |  |

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