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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Estimated Charge Backs We estimate that the charge-backs will be paid out as follows:
Year Ending December 31,(Dollars in millions)
2021$39.9 
202217.6 
20237.1 
20242.1 
20250.4 
Thereafter— 
Total$67.1 
Schedule of Deferred Revenue As of December 31, 2020, we had a contract liability balance of $194.3 million associated with these contracts and estimate the contract liability will be recognized as follows:
Year Ending December 31,(Dollars in millions)
2021$38.8 
202231.1 
202324.9 
202420.7 
202517.4 
Thereafter61.4 
Total $194.3