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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]  
Purchase Obligations
Purchase obligations as of June 30, 2020 are as follows (in millions):
2020 (remaining)$51.4  
202159.5  
202213.4  
20238.5  
20248.0  
Thereafter10.6  
Total purchase commitments$151.4