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Acquisition - Fiscal Year 2018 Acquisition - Additional Information (Details) - Convergys - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 11 Months Ended
Oct. 05, 2018
Aug. 31, 2019
Aug. 31, 2019
Aug. 31, 2019
Business Acquisition [Line Items]        
Goodwill measurement period adjustments     $ 9,496  
Business combination, increase in tax liabilities     26,962  
Business combination, increase in fair value of other acquired net tangible assets     17,466  
Acquisition-related and integration expenses   $ 9,200 $ 52,431 $ 89,921
Merger Agreement        
Business Acquisition [Line Items]        
Percentage of interest acquired 100.00%      
Purchase price $ 2,269,527      
Agreement date Jun. 28, 2018