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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases Minimum lease payments required under non-cancelable operating leases at December 31, 2019, with terms in excess of one year for the next five years and thereafter are as follows:
Years Ended December 31,
 
(in millions)
2020
 
$
1.8

2021
 
1.5

2022
 
1.4

2023
 
0.8

2024
 
0.8

Thereafter
 
0.8