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Derivative Financial Instruments and Hedging Activities - Narrative (Details) - USD ($)
May 31, 2019
Nov. 30, 2018
Aug. 31, 2018
Forward contracts      
Derivative [Line Items]      
Aggregate notional amount $ 2,100,000,000   $ 2,300,000,000
Forward contracts | Forward foreign exchange contracts | Cash flow hedging      
Derivative [Line Items]      
Aggregate notional amount 135,900,000   293,400,000
2018 Term Loan Facility | Interest rate swaps | Cash flow hedging      
Derivative [Line Items]      
Aggregate notional amount 350,000,000    
Anticipated debt issuance | Interest rate swaps | Cash flow hedging      
Derivative [Line Items]      
Aggregate notional amount $ 200,000,000    
Term Loan Facility | Line of Credit | 2017 Term Loan Facility      
Derivative [Line Items]      
Maximum borrowing capacity   $ 500,000,000  
Term Loan Facility | Line of Credit | 2018 Term Loan Facility      
Derivative [Line Items]      
Maximum borrowing capacity     $ 350,000,000