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Debt (Tables)
 6 Months Ended
Jun. 30, 2020
Debt Disclosure [Abstract]  
Schedule of debt balances
As of June 30, 2020 and December 31, 2019, our debt balances were as follows (in millions):
Weighted-Average Interest RateMaturitiesJune 30, 2020December 31, 2019
Senior Unsecured Notes6.25 %2022$249.8  $249.8  
Unamortized Debt Discounts and Issuance Costs(1.4) (1.7) 
Total Debt, net$248.4  $248.1