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Related Party Transactions (Tables)
6 Months Ended
Jun. 30, 2020
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions
For the three and six months ended June 30, 2020 and 2019, we recorded the following amounts for related party expenses, which also included the expenses related to share-based compensation discussed below:
Three Months Ended
June 30,
Six Months Ended
June 30,
2020201920202019
Operating expenses—related parties$1.3  $1.4  $2.8  $2.9  
Maintenance expenses—related parties0.1  0.1  0.2  0.1  
General and administrative—related parties3.6  3.7  7.5  7.1  
Total costs and expenses—related parties$5.0  $5.2  $10.5  $10.1