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Commitments and Contingencies - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Apr. 22, 2020
Jun. 13, 2019
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Schedule of Capital Lease Obligations [Line Items]          
Estimated loss provision recorded         $ 18,100,000
Reduction of estimated loss provision $ 2,900,000   $ 2,300,000 $ 4,800,000  
Estimated loss provision     8,100,000    
Indirect Taxation          
Schedule of Capital Lease Obligations [Line Items]          
Estimated tax liability     $ 10,100,000   $ 9,400,000
Class Action Complaint | Pending Litigation          
Schedule of Capital Lease Obligations [Line Items]          
Proposed settlement amount (up to)   $ 35,000,000.0