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EMPLOYEES' RETIREMENT PLANS (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016
BRP plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Deferred compensation liability | $ 49.3 | $ 73.1 |
Current value of segregated assets | 56.2 | 75.7 |
Net holding gain on segregated assets | 9.3 | 7.5 | $ 5.4
United States |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Compensation expense under defined contribution profit sharing and savings plan and BRP Plan | 27.3 | 28.3 | $ 25.0
Other Long-term Liabilities | BRP plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Deferred compensation liability | 42.8 | 50.1 |
Accrued Expenses and Other Payables | BRP plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Deferred compensation liability | $ 6.5 | $ 23.0 |

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