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Contingencies - Litigation (Details) - Wave Lengths Hair Salonsof Florida Inc - USD ($)
 1 Months Ended 3 Months Ended
Oct. 31, 2019
Apr. 30, 2019
Sep. 30, 2019
Loss Contingencies [Line Items]      
Required amount reserved   $ 90,000,000  
Amount awarded to other party   $ 60,000,000  
Period of settlement payments of monthly rent credits   5 years  
Loss contingency accrual   $ 88,150,000  
Litigation settlement expense $ 23,050,000    
Reduction in accrued liability     $ 26,396,000
Maximum      
Loss Contingencies [Line Items]      
Attorney fees and associated costs   28,000,000  
Incentive award costs   50,000  
Class administration costs   $ 100,000