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Commitments and Contingencies Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2021
Commitments and Contingencies [Abstract]  
Summary of Maturities of Lease Liabilities The following is a summary of our maturities of our lease liabilities as of September 30, 2021:
(in millions)
Year ended December 31, Operating Leases
Remainder of 2021$0.8 
20223.1 
20233.0 
20242.8 
20252.0 
Thereafter0.1 
Less: discount for time value(1.1)
Lease liability as of September 30, 2021$10.7