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RETIREMENT AND PROFIT SHARING PLANS - Additional Information (Details)
12 Months Ended
Mar. 18, 2016
employee
Aug. 31, 2017
USD ($)
Aug. 31, 2016
USD ($)
Aug. 31, 2015
USD ($)
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]        
Pension settlement charge     $ 0 $ 64,382,000
Actuarial losses   $ 49,565,000 (481,331,000) (77,228,000)
Pension expense   622,302,000 94,827,000 143,968,000
Contributions to U.S. and non-U.S. defined benefit pension plans, cash funding for retiree medical plans and benefit payments related to the unfunded frozen plan for former pre-incorporation partners   88,919,000    
Total expenses recorded for the United States and the United Kingdom defined contribution retirement plans   454,124,000 419,932,000 397,123,000
Fiscal2017PensionSettlement [Member]        
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]        
ActiveEmployeesintheU.S.PensionPlanWhoAreCurrentlyEligibletoAccrueBenefitsUnderCreationofaSeparateDefinedBenefitPlan | employee 600      
Pension settlement charge   509,793,000    
PensionSettlementChargeIncomeTaxExpenseBenefit   198,219,000    
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax   460,908,000    
Employer contributions   118,500,000    
Fiscal2015PensionSettlement [Member]        
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]        
Pension settlement charge       64,382,000
Lump sum payments from plan assets       279,571,000
Reduction to PBO       179,938,000
AdditionalActuarialLosses [Member] | Fiscal2017PensionSettlement [Member]        
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]        
Employer contributions   48,885,000    
PreviouslyRecordedPensionLiabilities [Member] | Fiscal2017PensionSettlement [Member]        
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]        
Employer contributions   69,615,000    
U.S. and Non-U.S. Plans        
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]        
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation   83,430    
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation   64,701    
Defined Benefit Plan, Fair Value of Plan Assets   $ 26,541,000 27,130,000 $ 24,643,000
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year   7.20%    
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate   4.50%    
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax   $ (142,197,000) (143,777,000)  
Employer contributions   12,496,000 9,774,000  
Lump sum payments from plan assets   0 0  
Reduction to PBO   $ 0 $ 0