Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Narrative (Details)

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Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Other Commitments [Line Items]    
Letters of credit outstanding, amount $ 15.7 $ 20.1
Purchase commitment 108.5  
Settled Litigation    
Other Commitments [Line Items]    
Loss contingency accrual $ 5.5  
Letter of Credit | Minimum    
Other Commitments [Line Items]    
Letter of credit, fee percentage 2.13% 1.25%
Letter of Credit | Maximum    
Other Commitments [Line Items]    
Letter of credit, fee percentage 3.25% 3.25%